โ Scribed by J.S.H.
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have determined the ratio between cesium chloride and silver, and thereby obtained a value of 132.91 for the atomic weight of cesium. J. S. H. Fatty Acids of Potato Starch.-LEo LEHRMAN AND ELVIN &BAT (Jour. Am. Chem. SOL, 1933, LV, 850) determined the preformed petroleum ether extract of potato starch, and found 0.02 per cent. They then hydrolyzed a large sample (2 kilograms) of the starch, determined the fat content of the hydrolyzed mass, and found approximately 0.02 per cent. Therefore fatty acids are not contained in the molecule of potato starch. J. S. H. International Atomic Weights for 1933.-The annual report of the Committee on Atomic Weights of the International Union of Chemistry (Jour. Am. Chem. Sot., 1933, LV, 441-452) recommends only two changes. The new value for the atomic weight of iodine is 126.92, the new value for the atomic weight of lanthanum 138.92.
๐ SIMILAR VOLUMES
methanol or acetone-ethanol gave rods, in. p. 85-86". Shoppee (5) gives m. p. 88-89" for p-sitosteryl chloride. Anal.-Calcd. for CggH4sC1; C1, 8.18. Found: C1, 8.15. p-Sitosterol 3,5Dinitrobenzoate.-The free compound (0.26 Gm.) was refluxed 0.5 hour with 0.60 Gm. 3,5-dinitrobenzoyl chloride in 8 m