Swine Growers' Association. 311 



effects of the disease and exposure were disastrous to many of 

 the inoculated animals. The owner reported three weeks later 

 that twenty head had died and a few more were "drooping around." 

 Some of these hogs no doubt died from pneumonia resulting from 

 exposure to the winter storms while in a weakened condition. Of 

 sixteen breeding hogs, which received better care in the way 

 of shelter during the "cold spell," only one was reported sick; 

 and this one was in an unthrifty condition when inoculated. 



In the same county, and on the following day three other herds 

 of stock hogs kept for breeding purposes, were inoculated on the 

 farms of William Glendenning, Thos. Glendenning and Mrs. 

 Young. In all of these herds a number of hogs had already died, 

 but following the vaccination none of those which were apparently 

 healthy at the time of vaccination showed any signs of cholera 

 afterwards, though left on the infected ground. These herds, 

 however, were small and received better protection from the 

 storms. They were kept in dry, comfortable quarters during the 

 severe weather. It therefore seems that in applying this method 

 to lots of "feeding hogs" which must run on infected grounds 

 where the conditions are such that thorough disinfection is ex- 

 tremely difficult or impossible, the proper method will be to vacci- 

 nate the hogs before they are exposed to the infected grounds, and, 

 if possible, have them immune before cold weather begins. 



The evidence which has beep quoted from well known breed- 

 ers of pure-bred swine, and other swine growers, as to the good 

 results of the practical tests of the "hog cholera serum" which 

 have been made on their farms, and under varied conditions, 

 strengthens the confidence which previous experimental work 

 had given us, that we have in this "serum," when it is properly 

 prepared and properly used, an exceedingly valuable means of 

 preventing cholera. 



The main problems now before us are: The production of a 

 sufficient quantity of a reliable serum to meet the needs of the 

 State, and the devising of a plan to he folloived in using the serum, 

 which will secure the best results for the swine industry of the 

 State as a whole, and which has for its aim the ultimate eradica- 

 tion of the disease. 



We realize that it would be an enormous task to undertake the 

 production of sufficient "hog cholera serum" to immunize all the 

 hogs in the State. But to control hog cholera this would be no 

 more necessary than it would to immunize every child in the 

 State against diphtheria in order to control that disease. It will 



