202 



COMPOSITION OF PANCREATIC JUICE. 



[BOOK ii. 



Percentage The thin juice secreted continuously by permanent 



composition of fistulse is sometimes not coagulable by heat alone, but 

 the thin juice requires the addition of an acid. It contains from 

 1020 parts per 1000 of solid matters. 



of permanent 



fistulse. 



COMPOSITION OF PANCEEATIC JUICE (C. SCHMIDT 1 ). 



SECTION 4. THE PANCREATIC ENZYMES CONSIDERED IN DETAIL. 



In the last section in discussing the general chemical composition 

 of the pancreatic juice we have referred to the fact that it possesses 

 very remarkable properties of acting on organic bodies, and that 

 these are supposed to be dependent upon the existence in the juice 

 of three distinct enzymes. It has further been stated that when 

 the pancreatic juice is precipitated by alcohol, the precipitate which 

 falls carries down with it the ferments. The precipitated body was 

 indeed formerly supposed to constitute the ferment, and the opinion 

 prevailed that this ferment is possessed of various properties. We 

 now know, however, that the activity of the so-called pancreatin, is 

 due to a mechanical entanglement of the ferments, which apparently 

 are not associated with one body but are distinct bodies. 



We must now in the first place carefully examine the chief facts 

 relating to each of the ferment actions of the pancreatic juice, and 

 study the products which take their rise in these. 



1 This table, which is compiled from Schmidt's observations, is reprinted from Maly, 

 op. cit., Hermann's Handbuch, Vol. v. a, p. 189. 



