CHEMICAL BASIS OF THE ANIMAL BODY. 1181 



even when placed under the action of the most powerful tryp- 

 sin, provided putrefactive changes do not intervene. Kiihne's 

 views may be conveniently exhibited in the accompanying tabu- 

 lar forms. 



DECOMPOSITION OF PROTEIDS BY ACIDS. 



1. 



By -25 p.c. HC1 at 40 C. 

 Albumin. 



Antialbumate. Hemialbumose 



1 ' 



Antialbumid. Hemipeptone. Hemipeptone. 



2. 

 By 35 p.c. H 2 SO 4 at 100 C. 



Albumin. 



I 



Antialbumid. Hemialbumose. 



Hemipeptone. Hemipeptone. 

 Leucine. Tyrosine. etc. Leucine. Tvrosine. etc. 



19 

 DECOMPOSITION OF PROTEIDS BY DIGESTIVE FERMENTS (ENZYMES). 



Albumin. s 



.= I t } 



& f Antialbumose. Hemialbumose. 



x i i 



[ Antipeptone. Antipeptone. Hemipeptone. Hemipeptone. 



Leucine. Tyrosine. Leucine. Tyrosine. 

 etc. etc. 





Having thus briefly stated the steps by which our present 

 knowledge has been reached of the possible products of a diges- 

 tive conversion of proteids, it now remains to deal with these 

 products seriatim. In so doing it will be best to describe first 

 such products as arise most largely and characteristically during 

 the action of acids, and to treat of the albumoses and peptones 

 subsequently. 



Antialbumate. This substance is according to Kuhne identi- 

 cal with Meissner's parapeptone. It is most readily formed 

 by the fairly prolonged action of dilute acids at 40, but it may 

 also make its appearance, but to much smaller extent, during 

 a peptic digestion in which but little pepsin is present. It is 



