1. Blaxter, K. L., and Brown, F., Nutr. Abst. and Rev., 22, 1 (1952).
2. Nelson, V. E., Ohrbeck, E., Jones, R. L., and Taylor, M. W., Amer. J. Physiol., 85, 476 (1928). Sure, B., J. Biol. Chem., 74, 45 (1927). Dam, H., Prange, I., and Sondergaard, E., Acta pharmacol. et toxicol., 8, 1 (1952). Kringstad, H., and Folkvord, S., J. Nutrit., 38, 489 (1949). Quackenbush, F. W., Gottlieb, H. L., and Steenbock, H., Indust. Eng. Chem., 33, 1276 (1941).
3. Brown, F., Biochem. J., 52, 523 (1952).
4. Robeson, C. D., and Baxter, J. G., Amer. Chem. Soc. Meeting, Buffalo, N.Y., 14B (1942). Robeson, C. D., and Baxter, J. G., J. Amer. Chem. Soc., 65, 940 (1943).
5. Dam, H., and Granados, H., Science, 102, 327 (1945).