. Chemical embryology. Embryology. SECT. 4] HEAT-PRODUCTION OF THE EMBRYO 703 & Hasselbalch, those of Hasselbalch, those calculated from Bohr & Hasselbalch's data, those of Lussana, and those of Murray, whose papers will be mentioned below. As Fig. 144 shows, there are a certain number of points above 0-75, although the greater number lie just below that figure. What is probably significant is that the latter occur mostly after the 8th day of development, while the G> 100- 09- 0 8- 07 © calculated from chemical analyses © Experimentally determined by Bohr and Hasselbalch and gi
. Chemical embryology. Embryology. SECT. 4] HEAT-PRODUCTION OF THE EMBRYO 703 & Hasselbalch, those of Hasselbalch, those calculated from Bohr & Hasselbalch's data, those of Lussana, and those of Murray, whose papers will be mentioned below. As Fig. 144 shows, there are a certain number of points above 0-75, although the greater number lie just below that figure. What is probably significant is that the latter occur mostly after the 8th day of development, while the G> 100- 09- 0 8- 07 © calculated from chemical analyses © Experimentally determined by Bohr and Hasselbalch and given by them Q ditto, but calcd. from their figures by Needham O Experimentally determined by Lussana O Corrections for alkali reserve 06. I 5 10 Days Fig. 144. former all occur before it. No high point is to be found after the loth day^. Lussana's points agree well with those of Bohr & Hassel- balch and Hasselbalch. Of the high respiratory quotients, the only point actually given by Bohr & Hasselbalch was 0-890 for the 4th day; the others were all calculated from their data in 1927 by me. At the same time I also attempted to see to what extent the alkali 1 Dickens & Simer give the of 5th day chick embryos in vitro (phosphate- Ringer, pH 7-4, 38°, with 0-2 % glucose) as 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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