(1) Shriner and Fuson, "The Systematic Identification of Or- ganio Compounds," John Wiley and Sons, New York. N. Y.. 1948, p. 226. (2) Reichstein, Hcllr. Chim. Acto, 9, 789 (1926). (3) Gordon, J. Am. Pharm. Assoc., 16, 418 (1927). (4) W. Markwald and A. McRenzie, Ber., 34, 485 (1901). (5) White, THIS JOURNAL, in press. (6) Chromatography was on silicic acid-rhodamine 6G by the (7) The authors are indebted to C. L. Ogg for the microanalyses. method of ...