1. Cf., for example, Buchanan and Fulmer, "The Physiology and Biochemistry of Bacteria" (London, 1928); and Anderson, "An Introduction to Bacteriological Chemistry" (Edinburgh, 1938).
2. C. R. Acad. Sci. U.S.S.R., 4, 283 (1936)
3. Brit. Chem. Abstr., A., 99 (1937).
4. Sevenet, J., Thesis, Strasbourg (1930).