Chenustry and Physics. 261 
(1.) Human fat does not consist ‘as formerly supposed simply of 
olein and margarin, but of at least six different fats. : 
-) The first of these fats is contained only in very small proportions, 
but from an analysis of the acid obtained from it, appears to be identi- 
acid, CseHs6Os. j 
_(3.) The second fat is anthropin.. The fatty acid obtained from it 
by saponification is remarkable for its great capacity for crystallization. 
It separates in broad brilliant crystalline leaves both from the alcoholic 
solution and when it passes from the liquid to the solid state. Its con- 
stitution appears to be represented by the formula CesHs2Qa, but 
urther investigations must be undertaken to place the correctness of 
* the formula beyond a doubt. 
(4.) The third fat’ is margarin which yields by saponification mar- 
garic acid, CoaHe4Qz. 
(5.) The fourth is palmitin which- yields palmitic acid, €32H220s. 
(6.) Palmitic acid is identical with the acid which is obtained by the 
PN of fused potash upon oleic acid and which Varrentrapp termed 
Oldie acid. 
5. On Schénbein’s Ozone; by Professor Faranay, (Proc. Roy. Soc., 
June 13, 1851.)—The object of the speaker was to give a brief ac- 
