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  • Inorganic Chemistry  (1,388)
  • Life and Medical Sciences  (200)
  • 1980-1984
  • 1935-1939  (786)
  • 1930-1934  (802)
  • 1937  (786)
  • 1932  (802)
Collection
Keywords
Publisher
Years
  • 1980-1984
  • 1935-1939  (786)
  • 1930-1934  (802)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Masthead (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530101
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  • 2
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    The histology of posterior regeneration in the polychaete Chaetopterus variopedatusThe material for this work was collected at the Woods Hole Marine Biological Laboratory during August, 1929; the subsequent work was completed in the Zoölogical Department, University of Chicago, Illinois, and the Anatomy Department, University of California, Berkeley, California. The author wishes to thank Dr. F. R. Lillie for his assistance. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 23-58 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: After amputation, the wound is closed by the protrusion and lateral expansion of the alimentary canal over the cut muscles and its final fusion with the epidermis laterally after about twenty-four hours. Associated with the expansion is a divergence of the two adjacent halves of the ventral nerve cord in the last remaining segment. As a result, the whole of the new regenerated lobe behind the ring of the cut epidermis is interneural; i.e., it is an enlargement of the normally small area separating the two nerve cords. Undifferentiated cells, or neuroblasts, are normally located interneurally, and during regeneration these neoblasts proliferate throughout the enlarged interneural zone of the papilla and migrate throughout the lobe. At first the neoblastic mesenchyme filling the lobe is loose and homogeneous, but as the cells settle down against the outer wall they replace the old intestinal cells and assume the characters of new epidermis. Internally, the mass acquires paired cavities, while the cells surrounding the cavities differentiate into muscle, peritoneum, etc. Thus one type of cell gives rise to the whole of the regenerated papilla. These cells are also the mother cells of the gametocytes.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530103
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  • 3
    Electronic Resource
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    Some cytoplasmic structures in the male reproductive cells of a pseudoscorpion (Chelanops corticis) (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 97-131 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The chondriosomes of the germinal epithelium are vesicular, whereas the Golgi material takes three forms. The aggregation of chondriosomes about the Golgi cap, located on the nucleus, suggests a chemical interchange between these in the growth period. They become cylindrical as the Golgi cap moves from the nucleus and becomes spherical. It is at this time joined by other Golgi material. The entire aggregation is dispersed previous to the maturation divisions, where the inclusions studied are only approximately equally divided, in contrast to conditions in the true scorpion, Centrurus exilicauda. Golgi granules on chondriosomal surfaces in the spermatid again suggest chemical interchange. The later changes of chondriosome vesicles to discs, and back to spheres, may be means of regulating chemical reaction. A close relation between chondriosomes and Golgi material is indicated by various bodies, of Golgi origin, within the former in the spermatid. A thick thread finally originates from among the chondriosomes of the elongated sperm. Spiral threads surrounding the elongating nucleus arise from reunited Golgi material, a derivative of this substance not previously recorded. The acrosome, also of Golgi origin, undergoes several changes in shape and shows several parts. The elongated nucleus, spiral thread of Golgi origin, acrosome, chondriosomal thread, and unusually long axial filament become coiled and encysted in an oval mature sperm capsule. In the female duct the sperm uncoils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530105
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  • 4
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    Coordination of ciliary movement. II. The effect of temperature upon the ciliary wave lengthThe investigation has been made possible through funds granted by the Chemical Foundation and the National Research Council. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 265-276 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The ciliary wave length is a constant in the temperature range of 10° to 30°C. and in Modiolus demissus has the average value of 13.1 μ. Comparison of these data for ciliary coordination with those of nerve conduction probably indicates that the two physiological processes possess certain properties in common. The cells which bear the cilia are 12.75 μ long and the variation in ciliary wave length and cell length is about the same, which may indicate a possible cytophysiological relationship between the two.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050530204
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  • 5
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    Keimbahn determinants and continuity of the germ cells in Sphaerium striatinum (Lam.) (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 345-365 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: During oogenesis granular mitochondria become concentrated in the proximal portion of the oocyte and remain concentrated in the line of cells that gives rise to the germ cells. Two cells of characteristic structure, appearing at gastrulation one on either side in the mesoderm, contain this mitochondrial cloud. All functional germ cells seem to be lineal descendants of these two primordial germ cells. The cloud disappears during gonad formation, but reappears in oocytes of the next generation. Except during meiosis and fertilization the germ-cell cycle is traceable from fertilized egg to sexual maturity. Details of meiosis and chromosome number were not ascertained.Capacity for producing germ cells in Sphaerium is traceable from a definite region in the egg to primordial germ cells through a localized cloud of mitochondria in the mature ovum and certain cells of cleavage stages. Mitochondria, therefore, serve as a Keimbahn determinant in the sense that they mark a region of oocyte cytoplasm destined for cytoplasm of primordial germ cells. They are not considered causal factors in production of germ cells, but are probably storage products persisting unused in the egg and in cleavage cells having lower metabolic rates. Disappearance of these mitochondria during gonad formation is explained by their dispersal among a number of cells and by their utilization in furnishing energy and material for production of new cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530207
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  • 6
    Electronic Resource
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    Masthead (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530301
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  • 7
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    Polyploidy and metaphase patterns (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 443-471 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A cyst of tetraploid first spermatocyte metaphases is described in the coreid hemipter Archimerus alternatus (Say), all other divisions in the testis being of normal diploid constitution. The striking fact is that in spite of the doubling of their number the chromosomes closely follow the group pattern characteristic of the corresponding normal divisions. In the latter the first metaphase always shows a ring of six autosome bivalents with a single m-chromosome bivalent at its center and a single univalent X-chromosome lying outside the ring (as in coreids generally). In corresponding tetraploids the numbers are respectively 12, 2, and 2. Three additional interesting features of the tetraploids are: 1) the fact that the two m-bivalents are always lined up end to end to form an axial quadrivalent chain; 2) that although two X-chromosomes are present (as in the normal female), they are never united to form a bivalent as in that sex; and, 3) that in the prophases (of which a few are present in the cyst), at least one pycnotic X, or chromosome nucleolus, is present.A critical discussion is offered of the general problem of the mechanism of chromosome movements and groupings, together with a review of recent literature. The conclusion is urged that the chromosomes themselves play an active and important part in these processes, and the possible genetic relations between chromosomes and spindle substance are discussed.
    Additional Material: 24 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050530302
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  • 8
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    Observations on the life history of a fingernail shell of the genus SphaeriumContribution from the Zoölogical Laboratory of the University of Illinois, no. 429. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 473-497 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: By statistical analysis and microscopical examination of a series of monthly quantitative collections, an attempt has been made to interpret the life history and reproductive habits of Sphaerium solidulum, one of the numerous species of the genus Sphaerium.Individuals of the species under observation have a distinctly limited life span of approximately one year. The period of maximum reproduction of this species does not occur in the summer months, as previously believed, but in the winter months. Seasonal growth rings are not present on this shell, although concentric lines are characteristic. No individuals of maximum size were present during the months from August to February. Maximum-size adults are apparently sterile. The analysis of distribution curves of each quantitative sample indicates two size groups in each collection as shown by the bimodal character of each graph. Distribution curves of embryos feature the bimodal character of the young and adult. The conclusions are founded on data secured from twelve monthly collections made from the same habitat totaling 7022 individuals.
    Additional Material: 3 Tab.
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    URL: http://dx.doi.org/10.1002/jmor.1050530303
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  • 9
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    The embryology of amphioxus (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 69-151 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Although the egg of Amphioxus is much more fluid and less stereotyped than that of Ascidians, the poles, axes, and localizations of formative materials are much the same in the two. The spermatozoon enters near the vegetative pole and a peripheral layer of granular cytoplasm flows to this pole and later forms a crescent around the posterior side parallel to the first cleavage amphiaster; this is the mesodermal crescent. On the anterior side a similar area later gives rise to the chorda-neural crescent. Above these crescents is the ectodermal area, below them the endodermal area. The early cleavages divide these crescents and areas just as in Ascidians. The coeloblastula is at first spherical, but later flattens in the region of the mesodermal crescent; this flattening extends forward on the vegetative side to the chorda-neural crescent, where the invagination is sharpest. The blastopore is at first triangular in outline, the dorsal lip being formed by the chorda-neural crescent and the lateral lips by the mesodermal crescent. Later the chorda and the mesodermal crescents are infolded, the lateral lips fuse to form the ventral lip which grows dorsalward, the blastopore becomes wider from right to left than dorsoventrally, the gastrula elongates and in the angles between dorsal and ventral lips the mesodermal crescent forms the mesodermal grooves in the lateral walls of the gastrocoel.
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  • 10
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    Observations upon the American representative of macrostomum tuba (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 221-231 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: What appears to be a variety of Macrostomum tuba has been described in this paper. There is but a single retinula in each eye. This visual cell displays three regions: rhabdome, ellipsoid, and myoid, as does a vertebrate's retinula. Moreover, the accessory pigment associated with the retinula of M. tuba is applied to the rhabdome and not to the ellipsoid and myoid; this likewise is similar to the distribution of the pigment about the vertebrate's retinula. An analogy, therefore, may be drawn between the visual cell of the rhabdocoele and that of the vertebrate. This is so strong as to suggest homology. Several features peculiar to this variety are: first, the chitinous, distal ring of the penis; second, the fact that shell and yolk droplets seem to be elaborated by each cell destined to become an oocyte.
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    URL: http://dx.doi.org/10.1002/jmor.1050540107
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  • 11
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    A comparison between the ultraviolet microscopy and the Feulgen staining of certain cells (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 189-199 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This paper describes ultraviolet (λ = 2750 A) photomicrographs of resting and dividing chicken macrophages and fibroblasts and of erythrocytes and lymphocytes. The structures found in these photographs are compared with the ones brought out in fixed material by Feulgen staining and found to be essentially similar in appearance. A preliminary series of ultraviolet pictures is also shown of a single fibroblast passing through several of its stages of division.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530107
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  • 12
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    Coordination of ciliary movement. I. Methods of study and the relation of ciliary coordination to ciliary inhibitionThe investigation has been made possible through funds granted by the Chemical Foundation and the National Research Council. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 243-263 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A simply constructed apparatus, which includes a cinema camera, is described for the recording of ciliary movements. From data for Modiolus demissus obtained by this method, it is concluded that the coordinating impulse is a propagated impulse which regulates the temporal and spatial relationships of ciliary contractility, that this impulse has to a certain degree a determinant effect upon ciliary inhibitory influences so that the area rendered inactive is a multiple of the ciliary wave length, that the coordinating impulse is transmissible through cells bearing quiescent cilia, and that it may act as a stimulus of sufficient strength actually to cause quiescent cilia to become active.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050530203
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  • 13
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    Comments on the origin of the midgut in insects (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 433-441 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Reviews the question of the origin of the midgut of insects with its diverse appearances and interpretations. Without doubt the midgut epithelium in some insects is derived from the lower layer, but in other insects from the tips of the stomodaeal and proctodaeal invaginations. The question of its origin seems to be “a function of the position within the whole,” and best understood from a standpoint of the time of determination of the parts involved. Maps illustrating the prospective significances of the principal types are included and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050530211
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  • 14
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    Studies on the life cycle of the snail, Viviparus contectoidesContributions from the Zoölogical Laboratory of the University of Illinois, no. 428. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 499-522 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: More than 3700 individuals of Viviparus contectoides from the Illinois River, near Peoria, Illinois, and from the Erie Canal in central New York, have been the subject of statistical and biological analysis as periodic quantitative samples to secure information on the life cycle. Sexes are easily distinguished through tentacular differences. Shells show marked sex dimorphism of size. Males reach a maximum height of 25 mm.; females may exceed 40 mm. Distribution curves, checked by experimental data on another species of the same genus, give evidence that males live normally about one year, while females may live three years. Differences in sex ratio are attributable to differences in life span and to changes in environmental factors producing aggregations of members of one sex.In central New York, the parturition period seems to begin to March and terminates in June. In central Illinois it extends from February into May. The uterus of a gravid female contains eggs, embryos, and shelled young in a graded series. At birth, the young shell contains one and one-half whorls and has a height of approximately 3.8 mm. Color bands are present on the shell three months before birth. Initial growth rate is extremely rapid. In less than three months the largest of the new generation are as large as the smallest of the parent generation. Graphs given show seasonal changes in the population.
    Additional Material: 10 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050530304
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  • 15
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    The development of the prechordal plate and mesoderm of amblystoma punctatum (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 1-67 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This paper describes the development of the prechordal plate and mesoderm of Amblystoma punctatum from the late yolk-plug stage to the stage of about nineteen somites.In the earliest stage described the prechordal plate is embedded in the roof of the archenteron and flanked on both sides by prechordal mesoderm with which it is fused. The characteristics and limits of the prechordal plate and mesoderm are discussed and the fate of both traced. It is demonstrated that the mesodermal cores of the mandibular arches are probably largely derived from the prechordal mesoderm which flanks the prechordal plate. The prechordal plate is later separated out of the roof of the foregut in a caudocephalic direction, giving rise to a median mass of mesoderm which expands laterally independently of the mandibular portions of the prechordal mesoderm to give rise to head mesenchyme lying largely anterior to the level of the hyoid arch. The expansion of this mesoderm is followed in some detail.The boundary between prechordal and notochordal regions is placed at approximately the boundary between the mandibular and hyoid arches.The question of the interpretation of the prechordal region is briefly discussed.
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    URL: http://dx.doi.org/10.1002/jmor.1050540102
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  • 16
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    A contribution to the embryology of sciara (diptera)I am greatly indebted to Dr. C. W. Metz for advice and helpful criticism and take this opportunity to express my gratitude to him. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 161-195 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 12 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050540105
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  • 17
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    The effect of ultracentrifuging on Paramecium, with special reference to recovery and macronuclear reorganizationAided by a grant from the Rockefeller Foundation for the study of cellular biology. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 27-49 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Paramecium caudatum becomes much elongated upon centrifuging at 21,000 times gravity. The chromatin is sometimes forced from the achromatic matrix of the macronucleus. The materials in the cell are redistributed according to their relative specific gravities as follows: At the centrifugal end of the cell, crystals, layer of fluid, micronucleus and macronuclear chromatin, food vacuoles and neutral red inclusions, achromatic matrix of the macronucleus, endoplasm with large clear alveoli, and fat, at the centripetal end of the cell. The contracting vacuole is displaced sometimes but not the feeding canals or pore. In some cases the crystals, micronucleus and macronuclear chromatin may be extruded from the cell. Animals which survive centrifuging regain their usual shape and the disturbed materials return to their usual distribution rapidly. Sometimes the crystals remain in large compact masses and are so passed to the daughter cells upon fission. The two components of the macronucleus do not fuse the macronuclear chromatin regenerates an achromatic matrix, and division is somewhat delayed. The old macronuclear matrix persists over a long time and sometimes interferes with division. Animals which have no micronucleus may survive and divide, but no amicronucleate races have been established. Apparently macronuclear chromatin is necessary for the survival and division of P. caudatum; in the absence of the macronuclear chromatin no replacement occurs from the micronucleus. The membrane of the contracting vacuole is temporary.
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  • 18
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    The gularis muscle in Urodela (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 317-324 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The last muscle in the transverse superficial throat series in all genera of salamanders is here called ‘gularis.’ This eliminates a long list of synonyms. A description of its metamorphic changes in Dicamptodon (Ambystomidae) and comparison of the larval and adult conditions in this genus with those in other known genera clears up the homologies of the muscle throughout the series. The study is based on dissections and a survey of the literature covering all important groups except the Hynobiidae.
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    URL: http://dx.doi.org/10.1002/jmor.1050600202
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  • 19
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    Weights and linear dimensions of the skull and some of the long bones of the skunk (Mephitis mesomelas avia) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 379-391 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The skull, mandible, atlas, scapula and the six long bones from seventy-four male and sixty-nine female skunk skeletons were weighed. Nine dimensions of the skull, two dimensions of the mandible and of the scapula, the length of the os coxa and the lengths of the same six long bones, were measured from 99 male and 109 female skeletons.The weights of the skull and of the nine bones are significantly heavier in the male skunks and all but one of the linear measurements are likewise significantly greater in the males. The weights and the linear dimensions of the skull and the mandible are more variable in the males but the lengths of the long bones are more variable in the females.The rather high positive correlations of the skull weight and the weights of the other parts of the skeleton studied, show that the weight of the skull is a good criterion of the weights of the other bones. These correlations are slightly higher in the males. The nineteen linear dimensions are likewise well correlated with the skull length. They average somewhat higher in the females.The data on the symmetry of the paired bones are not very conclusive, but there is a preponderance of heavier and longer right bones and a crossed symmetry is suggested.
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    URL: http://dx.doi.org/10.1002/jmor.1050600205
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  • 20
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    Observations on sperm formation in the centrurid scorpions with especial reference to the Golgi material (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 407-443 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The Mexican scorpion Centruroides shows exactly the same type of chondriokinesis (by ring formation) as that hitherto known only in the related form Centrurus, as earlier reported by one of us ('31). The Golgi bodies show no trace of ring formation but are distributed by random assortment like that of the chondriosomes in other scorpions. The Golgi bodies, clearly visible in vivo, show the typical plate-like or lamellar structure characteristic of them in other forms. In the first division, after Weigl, there appear to be two metaphase stages, an earlier one in which the dictyosomes are irregularly scattered and a later one in which they tend to mass near the mitotic poles. In the same division, after Champy-Kull, the (presumable) dictyosomes are regularly massed near the poles and may be traced through the whole mitosis. The neural red bodies (‘vacuome’) undergo an irregular distribution and are cast out in the slough. The problem of distribution and localization in the sperm-cell formation are discussed with reference to the principle of genetic continuity in the germ cell.
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    URL: http://dx.doi.org/10.1002/jmor.1050600207
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  • 21
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    The development of the cortical adrenal in the four-toed salamander Hemidactylium scutatum (Schlegel)Contribution from the Department of Zoölogy, University of Michigan. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 521-561 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Accounts of cortical adrenal development in urodeles are few in number and mostly incomplete from the point of view of development. Hence, an investigation was initiated to fill in existing gaps and present a complete developmental history of the glands in one of the urodeles.The primary anlagen of the cortical adrenal (interrenal) were seen first in the 8.8-mm. embryo as paired or unpaired cell groups in the interrenal area of the 'tween zone lying either in contact with or just beneath the coelomic epithelium. It was not possible to determine definitely whether they originate from the coelomic mesothelium or from the subjacent mesenchyme. Subsequent primordia are formed continuously throughout the period of larval development in an antero-posterior time sequence. Almost immediately they become associated with the postcaval system and the relationship thus established persists throughout life. There is no evidence of a budding process as described by Albrand ('08).During development there is a progressive increase in the size and number of cortical masses, an increase in the total area occupied by them, and a posterior shifting of the tissue as a whole as determined by its position in relation to the spinal ganglia. The definitive distribution is attained at the time of metamorphosis. The tissue occurs abundantly along the postcava, but strands along the median edge of the mesonephroi, as in some urodeles, are only sparingly developed.
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    Panniculus carnosus and formation of the pouch in Didelphids (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 1-26 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Panniculus carnosus is well developed in the five Didelphids studied. It is described in three parts: pars dorsalis, pars thoracoabdominalis and pars pudenda, in Marmosa, Didelphis, Metachirops, Metachirus and Chironectes, and in Orolestes, a caenolestid marsupial. Pars dorsalis is well developed in all five genera, but not so well developed as in Orolestes; pars thoracoabdominalis is present in all five Didelphids, but not in Orolestes; and the degree of development of pars pudenda is correlated with the development of the pouch, being absent in Orolestes, weak in Marmosa and strong in both males and females of the other genera. In Chironectes, in which genus the male develops a pouch, pars pudenda is strikingly developed. The ‘sphincter marsupii’ of other writers is considered to be a portion of pars pudenda.In early development an epidermal ridge arises surrounding part of the mammary area. In Marmosa these ridges move laterally and posteriorly before the expanding mammary area. In Didelphis, Metachirops, Metachirus and Chironectes the ridges form the lips of the pouch. The pouch is formed when the ridges remain stationary and the expanding mammary area throws the skin into a double-walled fold.
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    Oogenesis of Meretrix casta (chemnitz) with a note on the nature of the contents of neutral red vacuoles (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 127-148 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The Gelgi bodies in Meretrix casta being visible in fresh eggs, an attempt was made to elucidate the nature of the contents of neutral red vacuoles. These are neo-formations which arise on treatment with neutral red Ringer. As recent researches have shown that neutral red forms compounds with enzymes, it is suggested that the new vacuoles in Meretrix are visible products of the attempt of the Golgi apparatus to eliminate neutral red which is a foreign substance to the egg. The function of Golgi bodies in the control of cell metabolism by production of intra-cellular enzymes is discussed.
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    Reproductive system of the bruchid beetles bruchus quadrimaculatus Fabr., bruchus (callosobruchus) chinensis L., (bruchidae - Coleoptera) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 175-221 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The reproductive organs of Bruchus quadrimaculatus Fabr., and B. (Callosobruchus) chinensis L., including histology are described in detail. The role of the different parts of the male and female copulatory apparatus is discussed and the physical composition and function of the secretions of the accessory glands are indicated. The specific differences in the structure of the genitalia of the two species are shown.
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    An analysis of the early development of the chick by means of the mitotic indexContributions from the Zoölogical Laboratory, University of Oklahoma, second series, no. 150. Summary of a thesis submitted to the Graduate Faculty of the University of Oklahoma in partial fulfillment of the requirements for the degree of Doctor of Philosophy, June, 1935. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 257-284 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Using the percentage of mitotic figures in the cells as an index, a study was made of the distribution of cell multiplication in the development of the chick embryo. Counts were made of all regions in embryos ranging from the embryonic shield stage to sixteen somites, and of the neural and sensory epithelia and axial mesoderm of older embryos. Figures are presented which are believed to establish the sufficiency of mitotic division in producing the cell increases in the early embryo. In the developing primitive streak, areas of superior division rate were found in the presumptive medullary plate ectoderm at the sides of the streak. The node and the primitive plate tend to exhibit lower rates than the axis of the streak. The posterior nerve cells multiply more rapidly than the average of the neural tube, and areas of activity in the mesoderm tend to be located near the posterior end. An antero-posterior gradient of the index is indicated in the anterior neural tube, meeting a transient postero-anterior gradient of the hinder cord in the yolk-sac region. A lower rate of division in the floor than in the sides of the neural ectoderm may be implicated in the inrolling of the medullary plate and in the ventral ourvature of older embryos. All indices drop progressively with advancing age and differentiation.
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    Masthead (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    Oogenesis in a thelytokous wasp, Nemeritis canescens (Grav.) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 453-471 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In the fifty generations of reared Nemeritis, males have been totally lacking. Oogenesis is atypical in (1) the occurrence of a pronounced and lengthy prochromosome stage, (2) the partial fusion of the eleven tetrads at early first anaphase, (3) following first anaphase, a return of all dyads from both poles to form a common second metaphase plate consisting of twenty-two separate dyads, (4) a second division which forms a single polar nucleus and an egg nucleus, each with twenty-two chromosomes, (5) the parthenogenetic development of the egg nucleus with twenty-two chromosomes. Oviposition, which occurs at first anaphase, is followed by a pronounced swelling of the egg through osmosis. Oogonia, follicle cells, cleavage nuclei and somatic cells in later embryogeny all show twenty-two metaphase chromosomes, while pupai tissue shows also tetraploid and octoploid complexes.
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    Certain reproductive organs in the Neritidae (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 525-561 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Descriptions and figures of the subordinate sex-organs are given for thirty species taken at random throughout the entire family.It is found: that the higher genera have organs not present in the lower; that they have a storage sac for mineral particles to be added to the secreted capsules within which the eggs will develop; that the anus is more or less fused to the mouth of the oviduct to allow of easy passage of the above materials from anus to oviduct; that spermatophores grade from simple elongated tubes of the lower to stout double tubes with various forms, with spicules, or with spirals, in the higher forms; that the sacs for holding the spermatophores may be simple, when the spermatophores are cast out after discharge, but are more evolved when spermatophores are to be permanently retained and digested; that while lower forms have no sex organs upon the head, peculiar organs occur in the higher genera, in one or both sexes.These organs have value as aids in classification of genera within the family Neritidae. The very marked coordination among these organs may be better understood when further observation reveals how they are used in sperm transfer.
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    Studies on the amphibian digestive system II. Comparative histology of the pancreas, following early larval development, in certain species of anura (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 581-611 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Anatomically, the structure of the pancreas in four species of anura studied, is very similar during various stages of development. The gland is greatly reduced in size during both artificially induced and natural metamorphosis. When metamorphosis is artificially induced, the regression of the pancreas occurs somewhat earlier and is a little more rapid than in the case of natural metamorphosis, but the condition exhibited at the end of the phenomenon is similar in each case. Correlated with the anatomical regression during metamorphosis, many of the acinous cells, small collecting ducts and sinusoidal capillaries, undergo degeneration. This histolysis occurs somewhat earlier in animals that undergo artificially induced metamorphosis, but regeneration occurs about the same time in both metamorphic types. Most of the degenerated elements are autolyzed in situ; some are sloughed into sinusoidal capillaries; while a small number are eliminated through pancreatic ducts. It is doubtful whether these elements are ingested by phagocytes. The pancreas, in certain cases during later stages of metamorphosis, appears to take on a temporary hematopoietic function leading to the differentiation of red blood cells. Zymogen granules, lipoid granules, and X-granules are demonstrated in the anuran pancreas. X-granules, found in the larvae, are indeterminate in nature and are quite probably remnants of vitelline material found in the early embryo.
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    The adrenal-autonomic complex in Alligator mississippiensis (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 361-377 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The adrenal-autonomic systems were studied in embryonic and juvenile alligators. In the class Reptilia virtually no previous work has been done on the adrenal-autonomic systems.The adrenals are definite bodies, distinct from the kidney. In young forms they are in close proximity to the gonads and in both the embryonic and young forms the adrenals lie against the wall of the inferior vena cava.Cortical cells predominate. In embryonic forms the medullary tissue is not dispersed as in older forms. The medullary tissue lies in close proximity to the blood sinuses or may completely surround them.The arterial supply is scanty there being only a few small arteries to the adrenal while the blood supply from the inferior vena cava is profuse.The innervation is segmental in nature with four or five consecutive sympathetic ganglia giving off sympathetic nerves to the adrenal. Parasympathetic innervation was not observed in the forms studied. The innervation suggests a transition from lower forms with their segmental diffuse medullary material to the higher forms that display concentration of nerve supply and adrenal tissue.
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    A comparative study of the contents of the gelatinous accumulations of the culture media and the contents of the cytoplasm of Amoeba proteus and Arcella vulgaris (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 325-359 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Comparative data give the basis for reinterpreting alleged chromidia, mitochondria and Golgi material described for certain rhizopods.Three distinct groups of granules can be demonstrated in both Amoeba and Arcella by techniques ordinarily employed for revealing chromatin elements of a cell, mitochondria or Golgi material. With respect to physico-chemical properties the granules appear identical with certain forms of bacteria in the culture media. They are not destroyed by alcohol, ether, or Altmann's fluid containing 5% acetic acid.These granules are apparently bacteria; two groups representing permanent cytoplasmic entities either as symbionts or commensals, the third possibly temporary invaders.None of the cytoplasmic inclusions of these rhizopods have given the characteristic mitochondrial reaction when treated with Janus green. Spherules and granules, or alleged Golgi material, in Amoeba blackened with osmic acid can be revealed by techniques ordinarily employed for demonstrating the chromatin elements of a cell. Similar spherules and granules occur in the gelatinous material of the culture media, free or in bodies similar to those sometimes found in food vacuoles.In Arcella, neutral-red-stainable and osmiophilic bodies, apparently identical with granules or small globules found individually distributed in the cytoplasm, can be observed both in food bodies in food vacuoles and in similar food organisms in the medium. Those occurring in the cytoplasm may represent indigestible material.
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    Studies on the anatomy of the respiratory system of Drosophila melanogaster (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 445-458 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A description is given of the gross anatomy of the tracheal system of the larva of Drosophila melanogaster. Comparisons of findings are made with those of Lowne for Calliphora, Wahl for Eristalis, Simms for Hylemyia, Dufour for Sarcophaga, Wandolleck for Platycephala, Trägårdh for Ephydra, and De Meijere for Lonchoptera.
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    The continuity of the germ cells in the urodele, Plethodon cinereus (Green) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 489-519 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Plethodon cinereus is favorable for a study of the history of the germ line. The germ cells are large, while the gonads are small and show an almost diagrammatic structure. Germ cell degeneration is not extensive during ontogeny. As long as all the germ cells contain yolk during development, these cells are derived solely from germ cells. In Plethodon, yolk lasts in all germ celis through sex differentiation. A comparison of the number of mitoses necessary for the primordial germ cells to produce the numbers of germ cells in gonads where every germ cell contains yolk, with the mitoses necessary for the primordial cells to produce the adult complements of germ cells, shows that at least 72% of the increase of germ cells can be followed by yolk. A cytological study from the embryo through the adult sexual cycle gave no evidence that somiatic cells ever transform into germ cells. Mitoses are abundant in the testes of salamanders starved 4 months. This fact together with a statistical study on the adult male sexual cycle indicates that the germ cells present in the testis do not need to be augmented by transformed somatic cells. It is concluded that in Plethodon germ cells alone give rise to germ cells, and that the germ line is continuous.
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    Division and conjugation in Nyctotherus cordiformis (EHr.) Stein (Protozoa, Ciliata) with special reference to the nuclear phenomenaA thesis in Zoölogy presented to the faculty of the graduate school of the University of Pennsylvania in partial fulfillment of the requirements for the degree of doctor of philosophy.An abstract of this paper has appeared in the Biological Bulletin, vol. 71, 1936. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 563-611 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A cytological study of the complete life cycle of Nyctotherus cordiformis (Ehr.) Stein, a heterotrichous ciliate from the large intestine of tadpole and adult Hyla versicolor hosts is presented. In division a partial dedifferentiation of parental ingestatory structures occurs, then redifferentiation, to be retained by the anterior daughter. For the posterior daughter, the ingestatory apparatus arises de novo. In conjugation, two ciliates fuse along their peristomes. The macronucles undergoes complete fragmentation while the micronucleus divides three times. The first pregamic division results in two micronuclear products; the second division, four micronuclear products, three of which degenerate. The remaining product enters into the third pregamic division to produce the two functional, migratory and stationary, pronuclei. Interchange of migratory pronuclei follows at the fused anterior ends of the conjugants to form the amphinucleus which divides once to produce the micronucleus and the macronuclear anlage. Development and behavior of the unusual macronuclear anlage (‘spireme-ball’ of Stein and Schneider) is described for the first time. At the end of the conjugation process, ingestatory structures of each conjugant completely dedifferentiate while a complete new set arises de novo posterior to the old ones. In this case, conjugation occurs only in tadpoles which are metamorphosing into frogs. Conjugation here is interpreted as an effort made by the ciliates to overcome a physiological crisis during the drastic host transformation changes.
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    Structural and vascular changes accompanying the resorption of the proctodaeal processes after birth in the embryos of the Goodeidae, a family of viviparous fishesI wish to express my appreciation for the kind advice and guidance of Dr. C. L. Turner, under whose direction this investigation was undertaken. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 95-125 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The types of processes encountered in the various species investigated are described. There is included the topography and structure before birth of the gonads, mesonephric ducts, urinary sinus and gut. Following birth, there are but slight changes in the topography of these organs. The most important structural change involves a complete ectodermal reconstitution of the end of the gut to form a true rectum. The vascular supply to the processes in the different species is similar and varies only in the minute details. The arterial supply is furnished by an extension of a single mesenteric artery along the gut. The number of arteries and their position at the gut opening depends on the number and position of the processes at that point. Two venous channels drain the processes; one is somatic and drains into the caudal vein, the other is visceral and empties into the hepatic portal through the subintestinal vein. The former drains the posterior process, the latter, the anterior processes. This basic pattern is constant in all species investigated. A description of the rich capillary plexus on the surface of the processes is included. With the resorption of the processes after birth, vessels that supply them become variously modified. The vein to the anterior processes and the single artery are discontinued. The vein that drains the posterior processes either disappears or is retained in part, undergoing secondary connections.
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    Masthead (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1050610201
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    A comparative study of the chromosomes of eight genera of Indian Pyrgomorphinae (Acrididae) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 223-255 
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    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In the spermatogonia of all the genera studied, there are nineteen rod-shaped telomitic chromosomes, which differ considerably regarding their actual sizes in the different genera. However, an analysis of the measurements of second spermatocyte chromosomes shows that as regards proportional sizes and in seriation there is some degree of uniformity within the sub-family. In Aularches, Atractomorpha, Chrotogonus, Colemania and Pyrgomorpha, the members of the smallest pair of autosomes appear as roundish or oval bodies and are comparable in shape, relative size and behavior with the ‘small’ dot-like chromosomes of the general Acrididae, while in Orthacris and Zarytes they are not so and merge into the general series. The sex chromosome is the largest one in the complexes, or the second largest as in Poecilocerus. The usual forms of tetrads occur in the spermatocytes. It is found that the number of ring tetrads in any genus depends upon the length of its chromosomes; in genera with longer chromosomes there are more of them than in genera with shorter ones. While no final explanation has been offered regarding the chromosome relationship between this sub-family and the other Acrididae, some points arising out of the present study have been briefly discussed, and it is shown that a simple process of elimination of two pairs is not sufficient to explain the smaller chromosome number in Pyrgomorphinae.
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    Changes in the volume, form and internal architecture of the nuclei of the granular glands of the integument of the newt, Triturus viridescens (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 385-397 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Concomitant with the appearance of the early secretion granules the nucleus enlarges slightly, the basichromatin is reduced and discrete acidophilic granules appear within the nuclei. Some nuclei become vacuolated and in others the basichromatin is practically reduced to a thin shell reinforced with occasional chromatic strands. Such nuclei are filled with acidophilic granules.In many instances the portion of the nucleus adjacent to the secretion is greatly modified, the basichromatin is reduced and presents an alveolar pattern with the alveoli filled with acidophilic material and elongated at right angles to the nuclear membrane. This appearance suggests that material is passing from the nucleus into the cytoplasm but no cytological evidence of such a passage was obtained.During the storage phase giant nuclei are present. They appear to be the result of a simple hypertrophy but in a few instances it appeared that multiplication by direct division, followed by coalescence might be a contributory factor to their formation.Following thyroidectomy or hypophysectomy the production of secretion was retarded but no profound regression was observed. After treatment with implants or injections of anterior pituitary a mild stimulation was observed.The evidence for nuclear participation in the formation of secretion is not conclusive but many of the changes which occur strongly suggest such an activity.
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    A cytological study of the Golgi substance of striated muscle of vertebratesA dissertation presented to the Board of Graduate Studies of Washington University in partial fulfillment of the requirements for the degree of Doctor of Philosophy. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 399-431 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The silver chromate method used by Cajal, Fusari, and others supporters of the ‘network’ theory, fixes the contraction bands and (M) membranes in contracted muscle and the (Z) membranes and borders of the (Q) discs in relaxed fibers. The same structures are preserved by fixation in gold chloride. Kolatchev, and Bouin solutions. Muscle tissue subjected, prior to fixation, to fat extractives: ether, chloroform, etc., and subsequently fixed by these methods has an appearance similar to control preparations. The Cajal-Fusari ‘network’ is therefore considered to result from an impregnation of the membranes and bands; the various types of ‘nets’ described by these observers being due to fixation of fibers in different stages of contraction.The true Golgi substance of striated muscle consists of osmiophilic bodies located in the sarcoplasm in proximity to the nuclei. Cone, saucer, or crescent-shaped osmiophilic bodies occur at the poles, and granules, rods or curved rods of similar staining material along the sides of the nuclei. The disposition of these structures varies from nucleus to nucleus. Heart muscle possesses a relatively larger amount of the substance than does skeletal muscle.
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    The trophotaeniaeThe term trophotaeniae, ‘growth ribbons,’ was introduced by Hubbs and Turner ('37). of the goodeidae, a family of viviparous cyprinodont fishes (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 495-523 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The embryos of twenty-one species of the family Goodeidae have extensive rectal processes (trophotaeniae) which serve as absorptive organs, by means of which the embryos while they are retained in the ovarian cavity absorb substances dissolved in the ovarian fluid. Embryos of three species have not been available for study. No trophotaeniae are present in one species Ataeniobius toweri. There are three general types of trophotaeniae, rosette, sheathed and unsheathed. The structure of the trophotaeniae is sufficiently constant in each species to be used in species determination.
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    A microscopical study of glochidial immunityContribution no. 170. Published by permission of the United States Commissioner of Fisheries. Acknowledgment is due the staff of the Fairport Biological Station for many helpful courtesies extended during the prosecution of this inquiry. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 367-379 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Glochidial cysts on the gills of immune fishes form in the same manner as normal ones, but they tend to grow larger and become more irregular. The increased thickness is due to additional cellular connective tissue in the wall. The gill tissue indicates the existing biological incompatibility only by the presence of eosinophiles, extruded chromatin spherules, and eosinophilic plastids.In natural, or racial immunity many glochidia are promptly destroyed by cytolysis, accompanied by an invasion of host cells. These disintegrating glochidia may occur in close proximity to unaffected glochidia and apparently are merely less resistant individuals that succumb to a critically adjusted reaction.In both natural and acquired immunity the normal retention of glochidia and the accompanying metamorphosis are replaced by premature shedding. After the first day, the cyst thins by the removal of stroma cells back into the filament until the wall is reduced to a thin envelope. Both intact and destroyed glochidia, and apparently their cyst coverings, are sloughed at about the second day. Repair of the resulting notched filament is prompt.
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    The effects of x-rays on regeneration in Tubifex TubifexThis investigation is one of the studies upon effects of radiation upon regeneration in progress in the department of Zoölogy at the University of Missouri, assisted by grants to W. C. Curtis from the Committee on Effects of Radiation of the National Research Council. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 389-431 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Posterior regeneration in Tubifex is inhibited by suitable radiation with x-rays. Only a small knob is formed at the cut surface by rearrangement of the terminal region of the old body tissues. Location of the cut within the segment and repeated removals of segments within the posterior three-fourths of the body do not change this result. The worms are as though ‘castrated’ against regeneration. Normal worms regenerate readily under similar conditions and replace lost segments within thirty-five days. Mesodermal tissues in normal regenerating Tubifex are formed from neoblasts, which arise from peritoneal cells upon the posterior faces of septa near the cut, migrate to this wound surface, and differentiate into new structures. After radiation no neoblasts arise from peritoneal cells and there is no mesodermal regeneration. No changes, other than failure to form neoblasts, can be observed in the peritoneal cells. Migrating neoblasts are destroyed within a few hours by similar radiation.Epithelial tissues are also affected by x-rays, as shown by absence of mitoses and failure of regeneration in ectodermal and endodermal epithelia. During normal regeneration cells which form these epithelia and certain muscle fibers arise by proliferation from the epidermis and intestinal lining in the regenerating region, as shown by numerous mitoses in these layers. Failure of regeneration in radiated worms is thus related to lack of cells which are present in normal regeneration.
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    A study of the cytoplasm in insect ova (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 523-591 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The cytoplasm of the ova of ten species of insects, distributed among the Hemiptera, Coleoptera, Hymenoptera, Diptera, Orthoptera, and Neuroptera, has been studied. The Golgi bodies and chondriosomes were traced. They increase in number by fragmentation, but whether they may also arise de novo was not determined. They play no visible part in the formation of yolk or fat or any other structures or substances. Fat and yolk apparently arise independently in the cytoplasm. Vacuoles, which may stain with neutral red, may be present, but they are independent of the Golgi bodies. There is no vacuome in the sense in which Parat and others use the term. The Golgi bodies and chondriosomes are interpreted as substances rather than structures and as intermediate products of metabolism. Other bodies of unknown nature and function are present. The yolk nucleus of Gelastocoris is interpreted as a synthetic center.
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    Masthead (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1050540101
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    Embryology and life history of chaetopleura apiculata (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 153-160 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The breeding season of Chaetopleura apiculata begins about June 20th to June 25th and continues until about October 1st. Spawning takes place in the early evening, 8 to 11 O'clock. The cleavage and early development are strikingly similar to that of Ischnochiton as described by Heath, and is typically molluscan. The egg is enclosed in a bristly chorion from which it hatches after twenty-five to thirty hours. The larva is a large opaque trochophore which gradually transforms into a veliger larva by the development of the shell and foot. It settles to the bottom and metamorphoses into the adult form after six to ten days. It becomes sexually mature in one year and is full grown in three or four years, when it measures 29 × 18 mm. or less.
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    The spermatogenesis of the mouse (mus musculus, var. albula) (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 54 (1932), S. 197-220 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The previously reported diploid number of forty chromosomes has been verified; the sex chromosomes have been shown to exist early in the growth period and to be of the X-Y type; and a chromosome-nucleolus has been described in the resting stage of the primary spermatocytes which persists throughout synapsis and divides at the time of diakinesis into two parts that are equal in size and are thought to be the largest pair of autosomes. The diakinetic bivalents have been described rather fully. These are short and heavy and assume a great variety of shapes, the most characteristic of which are ring, V, Y, cross, and hexagonal. The union of bivalents during diakinesis has been shown to be an intimate one; in every instance first chromomere unites with first chromomere or third chromomere with third chromomere. This is considered to be significant evidence of the allelomorphism of chromomeres in mammals.
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    Spermatogenesis of the prawn, Palaemon lamarrei (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 149-163 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The spermatozoon of Palaemon lamarrei is like a cricket ball having a small hole at the top. The outer leather covering of the ball represents the nucleus and the internal stuffing the cytoplasmic vesicle, in the formation of which almost the whole of the cytoplasm of the spermatid along with its mitochondrial and Golgi material is sacrificed. The hole is very efficiently plugged with a ring-like centrosome, which gives off inward a large number of axial filaments radiating through the vesicle toward the nucleus and outward a long prominent spine ending into a fine point. The acrosome is conspicuous by its absence. It has been suggested that, as in Paratelphusa spinigera, the cytoplasmic vesicle forms the mechanism, which is responsible for the explosion of the sperm at the time of fertilization. It has also been suggested that the bizarre structure of the sperm is closely associated with the necessity of ensuring the safety of this explosive vesicle until the time of fertilization. The chromatoid bodies described by Fasten in the crayfish, Cambarus virilis, must be interpreted as the Golgi masses.
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    The dimensions of the renal tubules of Necturus maculosusThe expenses of this work were defrayed in large part from a grant by the Commonwealth Fund. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 51-58 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The method of micro-injection was used in the study of a large number of tubules. The limits of the several parts of the tubule were determined with a high degree of accuracy without sectioning; the error of the measurements was small. Of 137 tubules studied the measurements of forty-nine comprised the entire length from renal corpuscle to collecting duct or ureter.The proximal tubule was found to be about twice as long as the distal. While the longest proximal tubule was nearly six times the length of the shortest, the great majority of tubules fell within a much shorter range. There was little or no correlation between proximal tubule length and weight of the animal.The proximal tubule is larger in diameter than the distal tubule. Calculations indicate that the area of exposed cell surface in the proximal tubule is nearly four times as great as in the distal; however, compared to tubule volume, a relatively greater cell surface is exposed in the distal tubule.
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    The growth, maturation and atresia of ovarian eggs in the rabbitThis investigation was aided by a grant from the National Research Council Committee for Problems of Sex. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 351-383 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A study is made of the development of ovarian ova in mature rabbit does before and during various stages of pregnancy and after the injection of thyroid and anterior-pituitary-like hormones. No appreciable ovogenesis during sexual maturity was found. Nine types of ovarian follicle are distinguished according to size and degree of development. Full ovum size is reached in pre-antral follicles, and is marked by the formation of a dictyate nucleus and slight reduction in nuclear size. Full follicle size is attained much later. The nature of follicle migration in the course of development is described. Ovum migration within the follicle is found to be a consequence of the nature of the egg's attachments to the follicular epithelium. The least atresia is found in young oocytes (10%), the larger follicles showing about 60% atretic at all stages of the reproductive cycle. The hormone preparations administered affect only the largest follicles and their contained ova.
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    The development of the swim bladder of the Atlantic salmon (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 309-319 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The anlage of the swim bladder of the Atlantic salmon arises as a small mass of undifferentiated cells resting dorso-laterally on the posterior wall of the fore-gut. This mound of cells is proliferated from the narrow band of mesoderm which lies between the epithelium and the serosa of the alimentary canal. The concentration thus formed elongates slowly for 11 weeks. At the end of this time an evagination from the lumen of the right side of the oesophagus grows into it. This tube commences to elongate rapidly just previous to the time of hatching, and reaches the posterior end of the body cavity at approximately the time when the young salmon emerge from the gravel. Throughout the fresh water life of the fish this organ is a relatively large thin walled sac, lying dorsal to the body cavity. Microscopic examination reveals layers typical of those of the digestive tract.
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    The morphology of the hypophysis of amblystoma (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 485-494 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This paper presents an account of the morphology of the hypophysis and adjacent hypothalamic regions of young adult Amblystoma tigrinum. The description deals primarily with reconstructed models made from blotting paper; transverse and sagittal sections are also considered. A new term, hypophysis, pars subdistalis, is used to describe a discrete portion of the hypophysis embedded in the medial and ventral portion of the pars distalis. The other portions of the hypophysis also are described in detail.
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    Some factors in the morphogenesis of vertebrate embryonic epithelia (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 563-579 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This paper correlates the various aspects of the author's previous work on embryonic columnar epithelia and deals especially with the mechanical factors that determine the form of an epithelium. The origin of the terminal bars, the various forms the terminal bars assume, and the significance of the terminal bar net in maintaining the epithelial structure are discussed. The paper also gives detailed consideration to the elongation of columnar cells after division. When this change in shape cannot be attributed to crowding from without, it is suggested that a thrusting action of elongating spindle fibers is the internal force responsible. In either case elongation is influenced by the development of the terminal web limiting the free surface. Further observations on this structure, first described by the author in 1935, are presented. The terminal web, which is generally present in columnar epithelia, is a specialized part of fixed cytoplasm, condensed, and lying in the plane of the terminal bars. It disappears in mitosis, but its reappearance as the new cell elongates limits the area of the free end of the cell. Hence, the terminal web plays an important part in determining the form of columnar cells.
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    Masthead (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937) 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    URL: http://dx.doi.org/10.1002/jmor.1050600201
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    The anatomy of the male genital ducts in the fowl (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 393-405 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The epididymis in the male bird consists of the rete testis, ductuli efferentia, and epididymal tubules. The rete testis is lined with cuboidal epithelium not resting on a basement membrane. When distended with sperm the epithelium appears squamous-like. The tubuli efferentia are lined for the most part with pseudostratied ciliated columnar epithelium resting on a basement membrane. The epithelium is thrown into permanent longitudinal ridges. The epididymal tubules are lined with ciliated columnar epithelium resting on a bastment membrane.The three types of genital ducts are intermingled to some extent, but maintain a definite sequence in their connection with one another. The rete testis drains into the tubuli efferentia, and the latter into the epididymal tubules. These drain into the vas deferens.
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    The relation of germ cell degeneration to modifications of the testicular structure of Plethodontid salamanders (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 60 (1937), S. 459-487 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A study of the male sexual cycles of five species of Plethodontid salamanders indicated that annually occurring non-functional regions at the anterior and posterior ends of the testis are associated with the two types of germ cell degeneration: (1) extensive degeneration of secondary spermatogonia in the anterior region; (2) complete degeneration in the posterior region, beginning with the young spermatocytes, of all germ cells except the primary spermatogonia. The improbability of the posterior degenerations being caused by a suggested climatic action is discussed. The presence only in urodeles of a caudo-cephalic polarity of spermatogenesis over the length of the testis and of these degenerations seem more than a coincidence. The abortive spermatogenetic cycle of immature males shows a caudo-cephalic sequence and the stages of degeneration that are identical with the adult. Inanition experiments indicate that the formation of secondary spermatogonia and the ability to form sperm are not synonomous. It is suggested, therefore, that normally more of the testis is activated than can be brought to a successful spermatogenesis. Since spermatogenesis moves caudo-cephalically, the posterior end will be left outside the functional zone, and consequently the cells degenerate. The anterior degenerations and the failure of anterior end of the testis to be involved in spermatogenesis, mark the anterior regulation of the spermatogenetic process. Degenerations can be regarded as the by-product of the regulation of overactivation.
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    Masthead (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
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    The segmentary structure of the human X-chromosome compared with that of rodentsContribution no. 102 from the Zoölogical Institute, Faculty of Science, Hokkaido Imperial University, Sapporo. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 59-93 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Testicular cells obtained from Manchurians were chiefly employed for the study. In the primary spermatocyte the X-chromosome presents a three-segmented structure similar to that of rats. This was not clear in our previous studies, probably due to some technical failure. Of the three segments, one frequently assumes a shape suggestive of the Y-chromosome to some authors, but this never disjoins in the first maturation division, and accordingly it cannot be regarded as a true Y. The three segments are designated as P, D1 and D2 segment, the latter two are occasionally combined to form a single D segment. The P segment presents such a great modification of shape, that it led some authors to misinterpretation. The identification of the X-chromosome was uncertain in the spermatogonial group of chromosomes, but in every case of good fixation forty-seven distinct chromosomes were found.
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    Observations upon the aglomerular nature of certain teleostean kidneys (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 165-173 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Observations are reported which fully establish the aglomerular nature of the kidney in the following teleostean species: Hippocampus trimaculatus, Hippocampus kuda, Hippocampus hudsonius, Microphis boaja, Batrachus grunniens and Pterophryne histrio. It is possible that we are dealing with an additional aglomerular species (Microphis sp.), but this cannot be determined from the available material. All species were taken in sea water except Microphis boaja and Microphis sp., which were taken in fresh water.
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    Experimental observations on the Opalinid infusorians with special reference to the influence of radium radiation upon the cytoplasmic inclusions (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 285-307 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The cytoplasm of Opalinid infusorians contains two principal components; the mitochondria and the vegetative granules of the endoplasm. A third component in the form of Golgi bodies has been previously described. Under the influence of radium radiations the mitochondria are re-orientated so that they assume a transverse polarity to the longitudinal axis of the organism. Later the mitochondria are segregated by the radiations so that they lie apart from the vegetative granules with which they are closely associated in the normal organism.
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    Sexual dimorphism in north American hawks I. Sex organsAided by grants from the National Research Council, Committee for Research on Problems of Sex, grants administered by Prof. Emil Witschi. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 321-349 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The development of the gonads of the marsh hawk, Circus hudsonius, Cooper's hawk, Accipiter cooperi, and the red-tailed hawk, Buteo borealis borealis has been investigated. The occurrence and relatively long persistence of the cortex on both testes of the marsh hawk is evidence of bilateral amphisexuality in this form. The embryonic condition of the ovaries is related to the degree of asymmetry in the adult organs. Nearly symmetrical, paired ovaries were found in three species and varying amounts of reduction of the right ovary in all others.The disappearance of the right oviduct in the ontogeny of the female red-tailed hawk and the occurrence of accessory gonad tissue in male embryos of the same species are described and figured. The extent of reduction of the right ovary of eleven species is described, figured and classified. The following species are listed in the above order of classification: Circus hudsonius, Accipiter cooperi, Accipiter velox velox, Accipiter atricapillus atricapillus, Falco sparverius sparverius, Aquila chrysaëtos canadensis, Buteo borealis borealis, Buteo lineatus lineatus, Buteo lagopus sancti-johannis, Cathartes aura septentrionalis, Buteo platypterus platypterus.It is concluded that two ways by which organs may disappear are realized in the right ovary and oviduct of the hawks. (1) by failure of an embryonic inductor in the case of the ovary, and (2) in the right oviduct by secondary atrophy of an originally well-developed embryonic structure.
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    The structure of the nasal cavity in chamaeleo chameleon (Linnaeus) (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 433-451 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The nasal capsule of the chameleon differs greatly from that of other lizards in several respects. Cartilage is extremely persistent, particularly in the roof. The anterior chamber is produced backward to form an accessory posterior chamber. This posterior extension lies lateral to the olfactory chamber, from which it is incompletely divided by a longitudinal fold which may represent the normal concha.The organ of Jacobson is extremely reduced and occupies an abnormal position with relation to other structures. The olfactory nerves and their branches are much reduced, and the olfactory epithelium is poorly developed. The chameleon is at best a microsmatic animal.
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    The liver-blood fluid exchange and the morphology of hepatic cell mitochondria (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 473-484 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This work was undertaken in an effort to determine the reason why the hepatic cell mitochondria of some animals show a structural response to adrenalin while others show no such reaction.It was found that those animals whose mitochondria are altered by adrenalin undergo a relatively great increase in the percentage of water in the liver. This acquisition of fluid by the liver is accompanied by a disturbance of the cell-plasma ratio of the blood. Those species whose mitochondria show no reaction to adrenalin have no change of volatile liver water, haematocrit reading, and probably have no change of total blood volume.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050610304
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    Insect development. IV. External morphology of grasshopper embryos of known age and with a known temperature history (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 1-21 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Eggs of Melanoplus differentialis, a grasshopper, secured immediately after they had been laid, were placed in a water bath kept at 25°C, and allowed to develop for definite periods. After fixation, the embryos were dissected out of the eggs and drawn. Large numbers of eggs were examined in order to determine the degree of variation under specific conditions. For the stages following revolution, eggs were used in which ‘hibernation’ had been prevented by exposure to low temperatures.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/jmor.1050530102
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    Cytoplasmic structures in the ganglion cells of certain Orthoptera, with special reference to the Golgi bodies, mitochondria, ‘vacuome,’ intracellular trabeculae (trophospongium), and neurofibrillae (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 59-95 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The Golgi bodies of the nerve cells of the grasshopper are discrete elements composed of an osmiophilic cortex and an osmiophobic medulla. When seen in face, they appear ring-like, semicircular, or crescentic. The osmiophilic portion is interpreted as the homologue of the classical Golgi apparatus and may under certain conditions be dissolved away, leaving clear spaces homologous to the canalicular apparatus (negative image of Golgi apparatus). When the osmiophilic portion is dissolved, the osmiophobic portion remains as a definite structure which apparently has no homologue in the classical Golgi apparatus. The mitochondria are granular, rod-like, or filamentous and show no transformation into Golgi bodies. Neutral-red bodies (‘vacuome’) of two kinds have been observed, neither of which is a constant preformed structure or has any relationship to the Golgi bodies. Prolongations of the capsule (trophospongium?) of the nerve cell penetrate into the cell approximately one-third the distance to the nucleus. These are interpreted as supportive rather than nutritive in function. A basket-like net of neurofibrillae surrounds the nucleus. It is suggested that the networks described as Golgi apparatus in certain invertebrate nerve cells may really consist of these neurofibrillae.The conclusion of Parat that Golgi material consists either of mitochondria or ‘vacuome’ is rejected. The idea that all structures in the living cell which stain with neutral red (‘vacuome’) are homologous is also rejected.
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    The nutrition of glochidia during metamorphosis. A microscopical study of the sources and manner of utilization of the nutritive substancesContribution no. 166. Published by permission of the United States Commissioner of Fisheries. Acknowledgment is due the staff of the Fairport Biological Station for many helpful courtesies extended during the prosecution of this inquiry. A preliminary report appears in the proceedings of the American Society of Zoölogists (Arey, '23 a). (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 201-221 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Part of the nutriment of metamorphosing glochidia is supplied by the cellular host tissue, bitten by the larvae during attachment. Some of this is taken up piecemeal by the mantle cells and digested intracellularly. The coarse granules that first pack the mantle cells are apparently the precursors of a digestive secretion, some of which escapes into the mantle cavity. Here it also causes the prompt dissolution of additional utilizable host tissue.Another source of nutriment is furnished by the provisional larval adductor muscle which undergoes degenerative changes in situ, then fragments, and finally is carried away bit by bit by amoeboid cells. These turn over their muscle content to the larval mantle, where the particles are further reduced beyond recognition. The mantle remnant itself is finally sacrificed and doubtless becomes an additional source of nutriment.The gut serves as an organ of nutrition throughout the last two-thirds of the parasitic period. It appears to admit and digest pieces of the adductor muscle and certain unidentified particulate matter. In addition, the gut, like the definitive mantle and other organs, doubtless absorbs tissue transudate from the host.Special vascularization of the host tissue to facilitate the passage of nutriment from host to parasite does not occur, yet there is no reason to doubt that an appreciable part of the larval nutrition results from transuding tissue juices.
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    A topographical and cytological study of the sympathetic nervous components of the suprarenal of the chick embryoThis work was done largely at the Zoölogical laboratory of the University of Kentucky during 1929 and 1930. It was completed during the author's leave of absence from the University of Kentucky, while in residence at The University of Chicago, 1930 and 1931. (1932)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 53 (1932), S. 277-325 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A study was made of the development of the suprarenal gland of the chick with reference to the following points: 1) Topographical relationship of the sympathetic cell masses to the cortical cords, and to the sympathetic nervous system. 2) Cytological differentiation of the sympathetic cells.The migrating indifferent sympathetic cells, although becoming generally distributed over the medial surface of the cortical ridge, form a series of more prominent aggregations at certain definite loci. These aggregations are the rudiments of two longitudinal ganglionic chains, which develop from the sixth to the seventh day. Around and between the ganglionic rudiments the indifferent cell groups become penetrated by sympathetic fibers from the ganglionic rudiments as well as by fibers of sympathoblasts which develop from indifferent cells of the sympathetic-chromaffine complex. At the same time multipolar sympathetic cells lying between the cortical cords and processes to the tracts developing between the ganglia on the surface of the cortical ridge.Differentiation of ‘chromaffine cells’ from indifferent cells of the aggregations begins during the eighth day, after a profuse innervation of the rudiments has been established. Differentiation is evidenced by the appearance of cytoplasmic granules, and by the appearance of the ‘chromaffine reaction.’ The possible bearing of the innervation of the indifferent cell aggregations upon their differentiation and upon their penetration of the cortical bodies is discussed.
    Additional Material: 5 Ill.
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    The effect of temperature on mitochondria in liver cells of fishA part of this paper is based on a thesis presented in partial fulfillment of the requirements for the degree of doctor of philosophy at the Graduate School of Brown University in June, 1932. Much of the study of the Golgi apparatus was completed in the Department of Anatomy at the College of Physicians and Surgeons, and I wish to express my appreciation for the very liberal supply of equipment placed at my disposal. (1937)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 61 (1937), S. 613-639 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Fundulus and goldfish were subjected to varying degrees of temperature from 0° to 60°C. Heat rigor and lethal temperatures (37° to 40°C.) cause mitochondria to vesiculate, fragment, globulate and dissolve. The Golgi apparatus becomes swollen, breaks into small dictyosomes which migrate to the peripheral cytoplasm, and dissolves. Osmicated fat increases in amount. The vacuoles (vacuome) increase in number. Evidence is presented to show that dissolution of mitochondria takes place by three distinct methods; namely, (1) vesiculation, (2) fragmentation, (3) globulation. The mixochondriome hypothesis is proposed. This is based on the idea that the mitochondria differ in their chemical constitution, an idea which is supported by the fact that each kind of mitochondrion shows a characteristic manner of dissolution. It is believed that the semi-lunar vesicles of goldfish liver cells are not of mitochondrial origin, and that they and the Golgi apparatus are concerned in fat formation.
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    Eine neue Art komplexer Platinverbindungen Drei- und fünfwertiges Platin. IV (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 203 (1932), S. 401-404 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322030134
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    Druckfehlerberichtigung zur III. Mitteilung (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 231-231 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: No. Abstract.
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    URL: http://dx.doi.org/10.1002/zaac.19322040303
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    Masthead (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932) 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19322040401
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    Untersuchungen über Dynamik und Katalyse der thermischen Bicarbonatzersetzung. IV. Mitteilung Versuche über Katalyse des thermischen Ca(HCO3)2. Zerfalls (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 365-377 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde der Einfluß von molekulardispersen und kolloiden Lösungsgenossen, sowie von grobdispersen Zusätzen auf die thermische Zersetzung einer 0,005 n-Ca(HCO3)2-Lösung untersucht.
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    Innerkomplexe Verbindungen des fünfwertigen Niobs und Tantals (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 342-350 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19322040403
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    Fritz Foerster und sein Werk (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 1-20 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19322040102
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    Über den Oxydgehalt des Aluminiums und Methoden zu seiner Bestimmung. Bemerkungen zu der gleichnamigen Arbeit von H. Löwenstein (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 40-40 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19322040106
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    Härte, Mikrostruktur und Temperaturkoeffizient des elektrischen Widerstandes der Eisenplatinlegierungen (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 49-59 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19322040108
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    Die Bildungswärmen der Nitride. Die Azotierungswärmen von Lithium, Aluminium, Beryllium und Magnesium (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 81-96 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 13 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19322040111
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    Zur Zersetzung der Dithionate (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 204 (1932), S. 143-144 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19322040114
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    Über die Zersetzungsdrucke kristallisierter Hydroxyde, insbesondere von Aluminium und Beryllium (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 287-308 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Folgende kristallisierte Hydroxyde wurden isobar bei PH2O = 100 mm Hg unter röntgenographischer Kontrolle der Entwässerungsprodukte verschiedensten Grades abgebaut; Hydrargillit, Bayerit, Böhmit, Diaspor, stabil und metastabil kristallisiertes Be(OB)2. Trotz Verwendung kleinster Druckräume (0,3-0,8 cm3) und feinster Zerteilung der Präparate dauerte die Einstellung konstanter Drucke sehr lange (Wochen bis Monate). Die erhaltenen Zersetzungstemperaturen lagen alle erheblich unter den bisher in der Literatur mitgeteilten, stets vie1 schneller bestimmten Werten. Auch stimmen die aus den bisherigen Literaturwerten sich ergebenden Stabilitätsreihenfolgen in einigen Fällen nicht mit unseren Resultaten überein, und zwar da, wo die früheren Resultate auch den Befunden von Löslichkeits-, Umwandlungs- und kalorimetrischen Versuchen widersprechen.
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    Über die Valenzverhältnisse der Halogenide der dritten, vierten und fünften Gruppe des periodischen Systems (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 309-320 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050311
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    Masthead (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932) 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050401
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    Untersuchungen über Calciumaluminate. II. Die Kristallisation der Calciumaluminatlösungen bei 40° C (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 335-360 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus den Lösungen, die durch Mischung aus frisch bereiteten Calciumaluminatlösungen und Kalkwasser hergestellt werden, kristallisieren Bodenkörper, die optisch und analytisch untersucht worden sind.
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    Keto-enoltautomerie als Polymorphiemodell (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 414-416 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050408
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    Die Kristallstruktur des β-Zirkons (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 81-86 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Kristallstruktur der oberhalb 862°C stabilen β-Modifikation des Zirkons wurde röntgenographisch festgelegt. Sie ist kubisch-raumzentriert mit zwei Atomen in einer Elementarzelle mit Kante a =3,61 Å bei einer Temperatur wenig oberhalb des Übergangspunktes. Eine Röntgenkamera für die Herstellung von Drehaufnahmen von im Vakuum oder in einem beliebigen Gas glühenden Drähten wird beschrieben.
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    URL: http://dx.doi.org/10.1002/zaac.19322050107
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    Die Affinität von Metallen zu Schwefel. II Mitteilung. Thermische Dissoziationsgleichgewichte der Sulfide von Silber, Kupfer und Arsen (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 95-112 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mit einem neuen (direkten) Verfahren zur Untersuchung der Gleichgewichte von Metallsulfiden mit Wasserstoff wurden Versuche zur Bestimmung des Gleichgewichts zwischen Wasserstoff und Silbersulfid ausgeführt und die Dissoziationsspannungen, maximale Arbeit und Wärmeeffekt der Bildung von Ag2S im Temperaturbereiche 912° bis 1067°C berechnet.
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    Über das Verhalten des Poloniums bei der Kristallisation von Metallen (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 145-162 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Polonium ist vor anderen Metallen ausgezeichnet durch Seine geringe Neigung zu Mischkristallbildung. Seine gesättigten Mischkristalle enthalten nur 2,31 · 10-11 bis 5,28 · 10-10 % Po.
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    Masthead (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932) 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322060101
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    Eine elektrometrische Methode zur Bestimmung von Unterphosphorsäure (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 125-128 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19322060113
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    Gleichgewichtsuntersuchungen über die Reduktions-, Oxydations- und Kohlungsvorgänge beim Eisen. XI (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 129-151 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19322060202
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    Photosynthese im tropischen Sonnenlicht. V. Reduktion von Kohlensäure, Bicarbonaten und Carbonaten (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 171-173 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Kohlensäure, Carbonate und Bicarbonate konnten zu Formaldehyd reduziert werden unter Anwendung von Magnesium, Zink und Ferrocarbonat. Mit Magnesium und Zink ist die Ausbeute im Licht beträchtlich höher als im Dunkeln. Magnesiumpulver erwies sich als das beste Reduktionsmittel.
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    Die Benetzungswärmen von Kohle und Silikagel in Mischungen von Wasser und Essigsäureanhydrid (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 174-176 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19322060206
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    Hydrothermale Synthesen von Calciumsilikaten (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 177-195 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 19 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322060207
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  • 92
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    Die Neutralsalzwirkung der Ferri-Jodionenreaktion. 3. Über den Einfluß von Nichtelektrolyten auf die Geschwindigkeit der Reaktion (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 196-208 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird gezeigt, daß die Ferri-Jodionenreaktion auch in Gegen-wart von Nichtelektrolyten trimolekular (bimolekular für die Jodionen und monomolekular für die Ferriionen) vor sich geht.
    Additional Material: 24 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322060208
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  • 93
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    Über Silberferrite. V. Mitteilung. Der Alterungsprozeß des Orthoferrihydroxyds und die Konstitution des Goethits (α-FeOOH) (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 328-336 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Der Alterungsprozeß des Orthoferrihydroxyds wird als ein chemischer Vorgang beschrieben, mit dem zugleich kolloidchemische Veränderungen stattfinden. Die „amorphe“ und die kristallisierte eisenige Säure (γ-FeOOH) wurden näher untersucht, sowie einige Silberferrite durch ihre ferromagnetischen Eigenschaften zeichnet. Es wurden Angaben über die Konstitution und das Molekulargewicht des Goethits (α-FeOOH) gemacht.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322060314
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  • 94
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    Über die Hydrazinate einiger Silbersalze (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 206 (1932), S. 369-377 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322060405
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  • 95
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    Über die Wirkung von Rhodaniden auf Mercurosalze (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 235-240 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei Einwirkung der Rhodanide auf Mercurosalze findet eine quantitative Ausscheidung des Quecksilbers statt, welche nach folgendem Schema vor sich geht: .
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050304
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  • 96
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    Einfluß verschiedener Stoffe auf die Peptisation von Ferriarsenat, -phosphat, -wolframat und -molybdat durch Ferrichlorid (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 205 (1932), S. 241-250 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Niederschläge von Ferriarsenat, -phosphat, -wolframat und-molybdat werden in merklichem Umfang durch Ferrichlorid peptisiert, wobei positiv geladene Sole dieser Stoffe erhalten werden.
    Additional Material: 17 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322050305
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  • 97
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    Zur Konstitution von Pyrosulfaten, Pyroschwefelsäure und Monohydrat. Bemerkungen zur Arbeit von A. Hantzsch: „Über Säurehydrate und Hydroxoniumsalze“ (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 207 (1932), S. 111-112 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322070111
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    Masthead (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 207 (1932) 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322070201
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  • 99
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    Über die Bildungswärmen der Nitride. III. Die Lösungswärmen einiger Metalle und Metallnitride in Säuren (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 207 (1932), S. 133-144 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurden die Lösungswärmen folgender Metalle und Nitride in Säuren bestimmt: in H2SO4 (1:12,7), Mn5N2, in HC1 (1:20) Cr, Mg, Mg3N2, Ce, CeN, La, LaN. Die Lösungswärme des Chroms konnte infolge der Komplexsalzbildung nur angenähert festgelegt werden. Die gefundenen Werte und die daraus berechneten Bildungswärmen der Nitride gibt die folgende Zusammenstellung: TextMetallLsgs.-W. des Me Cal/g-AtomL.-W. des Nitrids Cal/MolBildungswärme des Nitrids Cal/N2Mn-278,93 ± 1,4456,82Cr(50,6 ± 1,7)--Mg111,99 ± 0,14284,79 ± 0,87115,18Ce165,15 ± 0,16119,17 ± 0,23156,00La167,72 ± 0,31127,06 ± 0,18145,36
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322070203
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  • 100
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    Beiträge zur Kenntnis der Verbindungen des Galliums und Indiums. V. Die Eigenschaften der Galliumtrihalogenide (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 207 (1932), S. 161-174 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. ES werden die Galliumtrihalogenide dargestellt und Schmelz- und Siedepunkte, Dichten im festen und geschmolzenen Zustand, Ausdehnungskoeffizienten und Leitfähigkeiten der Schmelzen bestimmt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322070207
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