Chemical Constituents of the Animal Body. 227 



amino-acids derived from the hydrolysis of certain typical 

 proteins are given : 



In the above table the complete hydrolysis has not in 

 all cases been carried out. Even, however, where all the 

 known hydrolysis products have been determined, the total 

 often falls far short of 100 per cent. This is due partly 

 to the inherent defects of the quantitative methods, such as 



