196 HOG CHOLERA 



breeder habitually provides facilities that allow 

 vaccinating to be done without loss of time, the 

 cost per head can be kept at a minimum. The 

 veterinarian who so advises his clients as to bring 

 these things about is the only one who can hope 

 to enlarge m's swine practice and gain lasting 

 success in hog cholera work. A system of wireless 

 which we do not completely understand, but which 

 nevertheless spreads intelligence rapidly and un- 

 erringly in country districts, will, in each veterin- 

 arian's community ultimately convey the news 

 that immunizing pays, or that it does not pay ; and 

 the veterinarian must have it whispered abroad 

 that immunizing their herds pays his clients or 

 he will "kill the goose that lays the golden egg." 



