ALBERT

Description: \xe2\x80\x94 During the last World War Dr Ohwi worked for several years in the Herbarium Bogoriense and compiled a preliminary revision of the Malaysian representatives of the genus Fimbristylis. The absence of any world revision, the temporary inaccessibility of type material, and of adequate literature, were the causes that this revision had an entirely preliminary shape and made it inadvisable to publish the MS as it was, due to circumstances alluded to above.\nFortunately Mr J. H, Kern, who is in charge of the colossal job of organizing the revision of Cyperaceae for the Flora Malesiana, has undertaken the delicate, time-consuming task of carefully checking the novelties distinguished by Dr Ohwi, which are to be incorporated in his own revision of the genus. Some species distinguished by Dr Ohwi have appeared to be conspecific with already described species from other parts of the palaeotropics, others have since 1941 been described by contemporaneous workers on the genus. The following species have hitherto stood the test and are at present accepted by Mr Kern and Dr Ohwi as good new species. Permission for publication was readily granted both by the Keeper of the Herbarium Bogoriense and by Dr Ohwi. I am exceedingly grateful both to them and to Mr Kern for their mutual trust and co-operation and their generous attitude. C. G. G. J. VAN STEENIS.

Description: During a recent treatment of the Proteaceae for \xe2\x80\x9cFlora Malesiana\xe2\x80\x9d it has become evident that a revision of the generic status of all proteaceous taxa reported from S. Asia and Malaysia as well as from the adjacent regions of Micronesia, Melanesia, Polynesia and subtropical-tropical Australia had to be made to reach a satisfactory correlation of the genera and species concerned as a basis for the discussion of phytogeographical relations both within and outside the proper Malaysian area. During this work it appeared necessary to transfer some species to other genera. A revision of the genus Helicia showed that a group of species had to be segregated as a distinct new genus Heliciopsis.\nMy studies are based on herbarium specimens borrowed from the following Institutions: Arnold Arboretum (A), Bot. Mus. Berlin-Dahlem (B, where the type-material of the family remained intact), Bogor (BO), Brisbane (BRI), Calcutta (CAL), Edinburgh (E), Florence (FT), Kepong (KEP), Lae (LAE), Leiden (L), Melbourne (MEL), Miinchen (M), New York (NY), Manila (PNH), Singapore (SING), Stockholm (S) and Utrecht (IT). The material preserved in the British Museum (BM), at Kew (K), and Paris (P) has been studied during a stay at London and Paris.

Description: As was done in the preceding volume p. 592-599 it seemed useful to correct some errors which have crept into the text of volumes 4 and 5 as well as to add some additional data, new records, and new species or other taxa which came to our knowledge and are worth recording.\nThough we strive to make this a work of precision I have given up all hope that I will ever succeed in editing a volume in which no corrections in references and authority of taxa will appear to be necessary. This may be possible in a century from now when the entries in Index Kewensis are completed, when all books have nicely been extracted, and their dates of publication have been fixed once and for all by zealous librarians.

Description: This is a supplement to Husson & Lam\xe2\x80\x99s revision of Haplolobus in Blumea 72, 1953, 413\xe2\x80\x94458, which will be referred to in the present paper as: \xe2\x80\x9cHusson & Lam 1953\xe2\x80\x9d. There is one new species (H. mollis, from Halmaheira) and one new forma ( H. acuminatus, fa glabrior) and the area of the genus has possibly to be extended to include Palau. I would not be surprised at all if it would turn up in some of the Philippines Islands.\nFemale flowers have been described for the first time of H. borneensis. Both in that species and in H. clementium the inflorescences have now been found to occasionally possess more or less abortive vegetative buds. This seems more and more a character of generic importance.

Description: From September 22nd 1951 until April 19th 1952 I stayed, with my wife as a good companion and technical assistant, in the Netherlands Antilles to make an ornithological survey of these islands. This work, which included both making a collection of studyskins and gathering field data and distributional records, was done under the auspices of the Foundation for Scientific Research in Surinam and the Netherlands Antilles (\xe2\x80\x9cNatuurwetenschappelijke Studiekring voor Suriname en de Nederlandse Antillen\xe2\x80\x9d) and was financed by the Government of the Netherlands Antilles. I am greatly indebted, therefore, to the Government officials of the Netherlands Antilles, particularly to Mr. J. H. Sprockel, minister of Education, and to the staff of the Department of Education. My thanks are also due to the members of the board of the \xe2\x80\x9cStudiekring\xe2\x80\x9d, among whom I should not forget to mention in deep appreciation the names of Dr P. Wagenaar Hummelinck and Dr J. H. Westermann. The trustees of the University of Amsterdam and the director of the Zoological Museum kindly granted me 8 months study-leave and released me from my responsibilities as curator of the Zoological Museum during this period. Sincere thanks are also due to board and members of the Natural Sciences Study Group Netherlands Antilles (\xe2\x80\x9cNatuurwetenschappelijke Werkgroep Nederlandse Antillen\xe2\x80\x9d), who never failed to help us magnificently, making our stay on the islands a most exillerating experience.\nThis first part of the scientific reporting on our voyage deals with the birds of St. Martin, Saba, and St. Eustatius. These small islands are among the most northerly of the group known as the Lesser Antilles (fig. 1).

Description: Au S-W de Tinerhir, dans le Maroc occidental, on trouve des verres volcaniques pris dans des d\xc3\xa9p\xc3\xb4ts de tufs. Quelques \xc3\xa9chantillons de ces verres contiennent du cuivre natif sous forme finement r\xc3\xa9partie. Les verres sont dus \xc3\xa0 une activit\xc3\xa9 volcanique d\xe2\x80\x99\xc3\xa2ge plioc\xc3\xa8ne. Ils sont accompagn\xc3\xa9s par des laves dont la composition varie entre celle d\xe2\x80\x99une phonolite et celle d\xe2\x80\x99une ankaratrite. Il est probable que le cuivre natif se soit form\xc3\xa9 lors d\xe2\x80\x99une \xc3\xa9ruption, laquelle aurait entrain\xc3\xa9 un fragment de la roche encaissante riche en sulfures de Cu. Sous l\xe2\x80\x99action des gaz ascendants, ces sulfures auraient \xc3\xa9t\xc3\xa9 r\xc3\xa9duits en lib\xc3\xa9rant ainsi le Cu-natif.

Description: Our Museum can take pride in a very valuable gem collection for, besides the numerous specimens which were gathered by King William I of the Netherlands a great many of the more unusual stones are to be found in it. Especially since World War II the Museum has acquired many interesting and important stones by gifts and purchases. This enlargement is especially due to the efforts of Professor Dr. B. G. Escher, who was continually aimed at the acquisition of rare and unusual stones for the gem collection, bringing it gradually up to modern standards.\nAs in so many gem collections, one finds stones which are not suitable for wearing, because they are soft or easily cleavable. It is surprising to see the variety of minerals that have been cut in recent years and which are scarcely suitable as gems for this reason. They are collectors\xe2\x80\x99 stones only.

Description: A short time ago rumors reached Bogota that a big cavesystem had been discovered by some farmers in the southwest of the department of Tolima, between the villages of Cunday and Purificaci\xc3\xb3n. This region belongs morphologically and geologically to the Eastern Cordillera, and forms the westernmost spurs of this mountain chain. As the existence of these caves was completely unknown up to that time, and as no limestones were known from that region, a scientific expedition was organized for a first exploration. The geological party of this expedition was formed by Dr. J. A. Bueno, the author and his wife. We went by car from Bogota to Girardot and from there to Cunday. The next day we had a whole day\xe2\x80\x99s walk to the entrance of the eaves. After two days and two nights passed underground, we left the caves some kilometers to the southwest, at the other side of the mountains. From there we had a two-days walk to the nearest-by village on the Magdalena-river, Suarez. From there we returned to Bogota by car.\nWe only could explore some kilometers of the cave-system, but the guide told us that, entering south of Cunday, one can go on to the south and leave east of Purificaci\xc3\xb3n, at least ten kilometers southwest of the Cunday entrance. Knowing that there are several levels, these dimensions would place the Cunday-caves among the larger ones of the world.

Description: In einem ersten Abschnitt stellt der Verfasser die ihm bekannten Literaturstellen zusammen. Im zweiten Abschnitt werden eigene Untersuchungen beschrieben, die als vorl\xc3\xa4ufiges Resultat ergaben, dass Clintonit in den Schweizer Alpen bislang nicht einwandfrei nachgewiesen ist, dass aber Margarit ein recht wichtiges Mineral mancher Ca-reicher, mesometamorpher Gesteine am S\xc3\xbcdrande des Gotthardmassivs und der mittleren penninischen Decken ist (als gesteinsbildender Gemengteil z. B. in den B\xc3\xbcndnerschiefern des Gotthardmassivs und in den Eklogitamphiboliten der Ophiolithzone Saas-Zermatt).

Description: Cet aper\xc3\xa7u sur les Spirorbes du Carbonif\xc3\xa8re n\xc3\xa9erlandais pr\xc3\xa9sente apr\xc3\xa8s une courte description de l\xe2\x80\x99esp\xc3\xa8ce Spirorbis pusillus, quelques remarques sur l\xe2\x80\x99\xc3\xa9cologie de cette esp\xc3\xa8ce et le commensalisme suppos\xc3\xa9 par certains \xc3\xa9tudiants, mais encore douteux d\xe2\x80\x99apr\xc3\xa8s l\xe2\x80\x99opinion de l\xe2\x80\x99auteur.