THE PROTEIN MOLECULE 97 



macerated for two hours in salt solution, the 

 solution kills promptly on intravenous injec- 

 tion. Homologous organ extracts are more 

 poisonous than heterologous. 



All these phenomena show that there is un- 

 der normal conditions a nice adjustment in the 

 constituents of blood and tissue whereby life is 

 protected and that slight changes easily disturb 

 this equilibrium with most disastrous results. 

 There are here unsolved problems but my work 

 leads me to the conclusions that there are pro- 

 tein bodies in the blood and tissue, which serve 

 under normal conditions as cell foods, but 

 which may become explosively poisonous when 

 the mechanism regulating their use is dis- 

 turbed. Normal cells contain deposits of these 

 bodies, which under proper regulation, supply 

 cell waste, but under abnormal conditions lead 

 to cell destruction. These substances were 

 probably present in my bacterial cells, but I 

 washed them out and threw them away leaving 

 only the cellular proteins. However, time and 

 labor will solve these problems and I turn to 

 another phase of my subject. 



If I properly interpret my work on the 

 chemistry of bacterial proteins it confirms the 

 theoretical views of Pfliiger, Ehrlich, and Ver- 

 worn, who have held that the essential part of 



