MECHANISM OF ANTIANAPHYLAXIS 151 



present in Insufficient amount. To this view, however, there are 

 a number of serious objections, such as the fact that anaphylaxis 

 may occur following the injection of antigen-antibody mixtures, 

 and that it is possible to produce antianaphylaxis in a non-specific 

 manner, as by the injection of a heterologous serum, or of Witte 

 peptone. For an adequate hypothesis, however, the experimental 

 basis is as yet lacking. 





