266 ACTION OF POTASH UPON CHOLESTERINE. 



This article is meant as an appendix to the one on sperma- 

 ceti, and as an additional proof of the analogy that exists 

 between that body and cholesterine, they being two of a class 

 of bodies which will no doubt be found to be tolerably nu- 

 merous, and which class I propose to call pseudo-gras. Among 

 them may be mentioned spermaceti, cholesterine, athal, am- 

 breine, and probably stearerine and ela'ierine, two fatty sub- 

 stances found in linseed-oil, and which M. Chevreul brought 

 to the notice of the Academy of Sciences not long since. This 

 class of bodies would appear to be a link between the fats and 

 resins. 



