. Chemical embryology. Embryology. Days-5 Fig. 384. for the pigeon). The nuclem phosphorus/lipoid phosphorus ratio is interesting. The values for the chick placed in Table 175 are taken from Plimmer & Scott's figures for the phos- phorus distribution in the em- bryo, and these authors, as I have before remarked, did not give their figures in milligrams per embryo, or even per cent, of the weight of the material. Thinking therefore that a cal- culation based on percentages of the total phosphorus alone might be distorted, I calculated the nuclein phosphorus in the embryo (which has never be
. Chemical embryology. Embryology. Days-5 Fig. 384. for the pigeon). The nuclem phosphorus/lipoid phosphorus ratio is interesting. The values for the chick placed in Table 175 are taken from Plimmer & Scott's figures for the phos- phorus distribution in the em- bryo, and these authors, as I have before remarked, did not give their figures in milligrams per embryo, or even per cent, of the weight of the material. Thinking therefore that a cal- culation based on percentages of the total phosphorus alone might be distorted, I calculated the nuclein phosphorus in the embryo (which has never been directly estimated) from the Targonsk. Days Fig- 385- data of LeBreton & Schaeffer and Targonski for the nuclein nitrogen in the embryo, and in this way obtained the nuclein phosphorus/lipoid phosphorus ratio for each day during the last fortnight of development. The result, given in Fig. 384, shows first a rise and then the beginning. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Needham, Joseph, 1900-. New York: The MacMillan Co.
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