THE PARTIAL-FUNCTIONS OF CELLS. 693 



gradually approaching the problem of securing an insight into the 

 nature of the action of drugs. I hope, too, that a systematic appli- 

 cation of the views I have here presented will facilitate a rational 

 development of the science of drug synthesis. In this connection 

 I may say that thus far arsenophenylglycin has proven in animal 

 experiments to be a truly ideal therapeutic agent. By the aid of 

 this substance it is possible to completely cure every kind of trypano- 

 some infection in any kind of animal, and that by means of but a 

 single injection. Truly, such a result may be termed therapia 

 sterilisans magna. 



