10 The Bulletin 



tween front and hind legs and base of ears, and constipation followed 

 by diarrhea. 



Post-Mortem. — Hemmorrhagic spots on kidney, lung, intestinal lesions 

 and congestion of lymphatic glands. Congested spleen studded with 

 petechise spots. 



Infected Premises. 



The length of time before it is safe to put non-immune hogs t)n in- 

 fected premises will depend largely upon the character of the grounds 

 infected. If the grounds are well drained and are not covered with too 

 much litter, so that the rays of the sun will reach all parts of the ground, 

 it would probably be safe to add susceptible hogs to the premises in 

 three months. But, if the grounds are not well drained and have low, wet 

 or marshy places, it would not be safe to add susceptible hogs to the 

 grounds under twelve months, or even longer. When conditions will 

 permit every effort possible should be made to thoroughly disinfect the 

 infected premises before hogs that are susceptible to cholera are added 

 to the premises. 



Sanitation, 



Under the ordinary farm conditions, it is practically impossible to 

 disinfect thorough enough to kill out all of the hog cholera infection, but 

 where possible all litter should be raked up and burned. This can be 

 done in small lots and should be followed with a spray of a five per cent 

 solution of carbolic acid, lysol, creolin or any other reliable disinfectant, 

 and a liberal application of lime. The pens and houses can be disin- 

 fected in a like manner; if they are inexpensive , ones it would be better 

 to tear them down and burn them. All mud holes and cesspools should 

 be drained and filled up. 



If these measures are followed one would most likely be safe in add- 

 ing susceptible hogs to the premises. If the hog lots or pastures can be 

 used for any other purpose and ncAV quarters can be found for the hogs, 

 it would be much safer. 



Susceptible hogs should be treated with anti-hog cholera serum if they 

 are to be placed on the infected grounds under twelve months. Since it 

 is practically impossible to thoroughly disinfect a large premise, the 

 hogs should be immuned to cholera before they are allowed access to the 

 infected grounds, but bear in mind it is always well to use disinfectants 

 liberally around hog houses. 



When cholera has broken out in a herd of hogs in a field, this field 

 should be covered with a heavy application of lime, and a crop groAvn on 

 it for one year before it is used again, unless the hogs are "immune." 



Some of the Ways by Which Hog Cholera is Spread. 



It is well to bear in mind that every case of hog cholera comes from 

 a previous case of cholera. It is impossible to produce a case of cholera 

 without having the germs that cause hog cholera. No matter how 

 filthy the lots or pens in which the hogs are kept, they cannot have 

 cholera unless the germs from a previous case of cholera are introduced. 

 The disease cannot arise spontaneously. All secretions and excretions 

 are laden with the infection and if allowed to enter into a susceptible 

 hog's system will produce cholera. 



