G. W. McCOY g6s 



UNSTANDAEDIZED PREPARATIONS 



The preparations mentioned are the important ones for which there are standards 

 or standardized methods of testing. There are others for which no method of stand- 

 ardization has been worked out sulhciently to warrant discussion here. There are 

 still others of such doubtful value therapeutically or prophylactically as hardly to 

 warrant the time and effort that would be required to put their standardization on a 

 satisfactory basis. 



