228 HOG CHOLERA 



location of garbage feeding establishments, and 

 to require adequate equipment for their operation. 



Regulations in Canada require that all men who 

 plan to feed garbage shall first secure licenses, 

 and the plan seems to be working well; princi- 

 pally, we believe, because the sources of danger 

 are limited in number and known. Cooking the 

 garbage is required, but this, in our experience, 

 is a measure of doubtful value. There is no doubt 

 that a boiling temperature will kill the virus, but 

 there is doubt that such a temperature will ac- 

 tually be applied to all garbage fed in any estab- 

 lishment. We have frequently seen neglect of this 

 kind end in disaster. In one instance we were 

 called to handle an outbreak of hog cholera at a 

 large sanitarium where provision had even been 

 made for cooking all garbage under pressure. An 

 unguarded interval during which the apparatus 

 was temporarily out of order was responsible for 

 this outbreak. Immunizing the herd is usually 

 far safer than cooking the garbage on which it is 

 fed, and it has the additional advantage of pro- 

 tecting against all sources of infection. 



Despite the need for various measures to pro- 

 tect the swine breeder's herd, the fact remains 

 that the measures which he himself can apply will 

 be most effective. He can exclude all pork trim- 

 mings from the kitchen refuse which he feeds, he 

 can discontinue feeding garbage, or he can in co- 



