Abstract
THE fact that the colloid osmotic pressures exerted by the body fluids of marine animals arrange themselves in the order of their phylogenetic development1, suggested that there exists a definite relationship between the general organization of an animal and the colloid osmotic pressure of its body fluids. The results of the measurements undertaken with the hæmolymphs of some terrestrial invertebrates confirmed this hypothesis ; the values obtained2 were indeed practically the same as those of the body fluids of the corresponding marine animals. I concluded from these observations that neither sea water nor air as surrounding media have any marked influence on the above-mentioned relation.
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References
P. Meyer, NATURE, 136, 757 (1935); Compt. rend. Soc. Biol., 120, 303, 305 (1935); J. Physiol., 34, 5 (1936).
P. Meyer, NATURE, 137, 401 (1936); Compt. rend. Soc. Biol., 120, 1004, 1005 (1935); J. Physiol., 34, 448 (1936).
A. Keys and R. M. Hill (J. Exper. Biol., 11, 28; 1934) had already measured the colloid osmotic pressure of the serum of three freshwater teleosteans (Tinca vulgaris Esox lussius and Anguilla vulgaris). The figures reported by these authors agree with the values recorded in this note.
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MEYER, P. Colloid Osmotic Pressure of the Body Fluids of Freshwater Animals. Nature 138, 287–288 (1936). https://doi.org/10.1038/138287b0
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DOI: https://doi.org/10.1038/138287b0
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