Chemistry and Physics. 455 
tion containing 1°5 grams barium oxide, absorbing 60 c.c. of the 
gas in 27 days, the resulting barium salt being soluble in the 
aleohol. Its analysis is peculiarly difficult, since it is destroyed 
by the least trace of water. he results gave the formula 
C,H,Ba’O,. Hence the new body is isomeric with barium pro- 
pionate, from which it is easily distinguished by its decomposition 
into alcohol and barium formate by the action of the water 
distinguished from these by being decomposed by water into al- 
cohol and formic acid.—Ann. Chem. Phys., 1V, xxx, 139, Sept., 
1873, 3 
oe 
5S ? i 
icteric urine and subsequently in normal urine. The urme 1s 
evaporated to a syrup, extracted while still warm copiously with 
absolute alcohol, filtered, the alcohol distilled off, the residue acid- 
leads to the formula C,H,N.,0. It forms salts with acids, forms 
sarcolactic acid when treated with nitrous acid, and evolves ethyl- 
i d ammonia when boiled with barium hydrate. Hence, 
the author proposes for it the rational formula : 
NH,---CO---C, H,---NHg. 
— Ber, Berl. Chem. Ges., vi, 883, July, 1873. G. F. B. 
n the Passage of gases through Colloid membranes of 
gin—M. A. Bartustemy performed the following 
reduced, on fading during { 
of a pellicle endued with elasticity and representing almost noth- 
