— 198 — 

 TABLE IV. 



The experiments 1-5 show that, in average, the total nitro- 

 gen content of the fresh brain is 15.7 «/oo- From this quantity 

 1.82 grms. of incoagulable nitrogen are soluble in filtrate C, 

 whilst 2.71 grms. are soluble in the filtrate of the main research. 



Consequently, whilst in the control research are soluble 11.6 

 per cent of the total nitrogen of the brain , in the main re- 

 search, through the action of the ferments, 17.3 per cent are 

 soluble. The difference of 5.7 per cent of the total nitrogen of 

 the brain is due to the action of the ferments. 



In table Vili (pag. 204) we see that during 96 hours of 

 a u t o 1 y s i s a t 3 7 ° • t h e ferments are e a p a b 1 e t o s o- 

 1 u b i 1 i s e 6.3 per cent o f the i n s o 1 u b 1 e n i t r o g.e n 

 content o f t li e fresh brain. 



Levene and Stookey ^) have found that, after six days auto- 

 lysis of dog brain, in a physiological solution of natrium chloride, 

 the quantity of soluble and incoagulable nitrogen is 18.3 per 

 cent of the total nitrogen of the brain. 



oc. cit. 



