COMMON DISEASES OF SWINE 



331 



Association, Dr. A. T). Melvin, Chief of the Bureau of Aninuil 

 Industry, II. S. Department of Agriculture, gives results of 

 extensive tests, involving several thousand hogs upon farms, 

 under practical conditions. In the course of his address. 



Courtesy Tennessee Department of Agriculture. 



Fig. 95. — Injecting serum behind ear (large hog). 



Dr. Melvin makes the following statements regarding the 

 experiments : 



" In no cases were any of the ordinary methods of 

 combating hog cholera by disinfection and separation of the 

 sick from the apparently healthy practised. AVhere dis- 

 ease was present at the time of treatment, the treated were 



