BACTERLVL INOCULATION 227 



oculations. On the other hand, physicians generally, 

 at the present day, owing largely to the energy of 

 pharmaceutical firms marketing stock bacterins, em- 

 ploy bacterins controlled or miscontrolled by the clini- 

 cal symptoms in preference to the opsonic index. 



It is utterly out of the question for the average 

 general practitioner to master the bacteriology and 

 laboratory technic required for the reliable determina- 

 tion of the opsonic index, and experience has already 

 demonstrated that in the majority of patients thus 

 far subjected to bacterial immunization the clinical 

 symptomatology has admirably sufficed to control 

 the inoculations. Consequently, bacterin therapy, in 

 order to enjoy the popularity which is its due, must be 

 governed, within limitations, by the subjective and ob- 

 jective symptoms and signs, observing the former and 

 avoiding the latter. 



