40 PKOTEIDS. 



tryptic digestion into leucin, tyrosin, &c., each peptone being pre- 

 ceded by a corresponding anti- or hemi-albumose. Antipeptone 

 remains as antipeptone even when placed under the action of the 

 most powerful trypsin, provided putrefactive changes do not 

 intervene. Kiihne's views may be conveniently exhibited in the 

 accompanying tabular forms. 



DECOMPOSITION OF PROTEIDS BY ACIDS. 



1. 

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



Albumin. 



Antialbumate. Hemialbumose. 



I i 



Antialbumid. Hemipeptone. Hemipeptone. 



By 35 p. c. H 2 S0 4 at 100 C. 

 Albumin. 



Antialbumid. Hemialbumose. 



I I 



Hemipeptone. Kemipeptone. 



Leucin, Tyrosin, etc. Leucin, Tyrosin, etc. 



DECOMPOSITION OF PROTEIDS BY DIGESTIVE FERMENTS (ENZYMES). 



Albumin. 



p 



( Antialbumose. Hemialbumose. 



|] \ \ | 



I ( Antipeptone. Antipeptone. Hemipeptone. Hemipeptone. \ - 



ts i \ 



i \ \ 



Leucin, Tyrosin, Leucin, Tyrosin, 

 etc. etc. 



The several products (antipeptone, &c.) are given in duplicate, 

 on the hypothesis (of which there is now but little doubt) that 

 the changes of digestion are essentially hydrolytic changes, accom- 

 panied by a deduplication ; that just as a molecule of starch splits 

 up into at least two molecules of dextrose, or as a molecule of 



