phoric and lactic acids are derived from this must be one that is quite independent of that by which the glycogen itself is broken down. 3107 Experimental relaxation of the pubic ligament of the guinea pig. FREDERICK L. HISAW. (Introduced by Edgar Allen).

Absorption Spectra of d-2-Nitro-octane and the Sodium Salt of d-2-Nitro-octane.-The absorption spectra (Plate I) were determined in a K and E color analyzer which permitted measurements in the visible range only. A solution of 0.5191 g. of d-2-nitrooctane in 20 cc. of absolute alcohol was used for obtaining curve (A) and a sample of 0.5041 g. of 2-nitro-octane which was treated with one equivalent of sodium ethylate solution and diluted to 20 cc. was used to obtain curve (B). Summary 1. The preparation of (d) and (/) 2-nitro-octanes is described. 2. The sodium and potassium salts of d-2-nitro-octane were found to be optically active to the same extent.3. The d-2-nitro-octane regenerated from the sodium salt at -10°was optically active to the extent of 24.12% of the original

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