— 203 — 



In table Vili are summarized the data regarding the quantities 

 of the insoluble body of the fresh brain together with its nitrogen 

 and phosphorus content, as result from the experiments Nos. 1-5; 

 besides are shown up the percentages of the insoluble solids, 

 nitrogen and phosphorus, become soluble in 96 hours of auto- 

 lysis at 37° and which represent the real work of the ferments. 



V. — Conclusions» 



The present researches show that leaving the brain to incu- 

 bate at 37° fov Q6 hours, the ferments are able : 



1. To solubiHse 5 per cent of the insoluble solids. 



2. To solubilise 6.7 per cent of the insoluble nitrogen. 



3. To solubilise 15.8 per cent of the insoluble phosphorus. 



4. To break down the nucleic acid, which results from the nu- 



cleo-proteid, setting free the phosphoric acid and the pu- 

 rin-bases (nuclease). 



