136 BIO-CHEMICAL JOURNAL 



being killed on the same morning or the same afternoon. This was 

 to obviate any difference that might be caused by differences of hydra- 

 emic state of the tissues due to differences of temperature. The general 

 results are given in the accompanying table (Table I). The following 

 abbreviations are employed : 



F = animal fasting. 



D = animal killed during active digestion. 



N 

 N = total nitrogen, expressed in c,c, H 2 SO* necessary for neutralization of NH S 



R = residual nitrogen ,, ,, 



N R = nitrogen of coagulable albumen. 



The results obtained are summarized below. 



TABLE I* 



* The nitrogen determinations refer to 15 c.c. of serum, and 5 grams of liver or of mucous 



membrane of intestine. 



