392 The Diseases of Animals 



access to mineral substances, such as wood ashes, slack 

 coal, salt and sulfur. These ingredients can be mixed 

 and placed where the hogs can get at them. Stock 

 hogs need exercise and a run on pasture, where they 

 can get green food and come in contact with fresh 

 earth. Dish-water and swill from the farmhouse are 

 excellent, but garbage and city slops should be used 

 with caution, as they often contain large quantities of 

 soap powders and other materials that are injurious 

 when fed freely. 



Hog cholera occurs sometimes in a mild form, but 

 often in a virulent and fatal type. In the latter type, 

 the first indication of the disease is finding a dead 

 animal ; or an animal noticed to be ailing in the 

 evening will be found dead the next morning. If the 

 disease is of a milder type, or if the conditions are 

 favorable to watching its progress, the following symp- 

 toms will be noticed : The animal first appears dull 

 and quivering, showing a tendency to hide away in the 

 bed, and to shiver as it lies there. It evinces a dislike 

 to be disturbed, and when driven from its bed moves 

 stifiQy, and is likely to cough and sneeze. Sick pigs 

 show a tendency to wander away, often long distances. 

 There is a rise of temperature in the early stages of 

 the disease, before the physical symptoms appear, the 

 temperature rising from 103° F., or thereabouts, to 107°. 

 There seems, to the writer, to be a characteristic odor 

 to the disease that is quite pronounced, but difficult to 

 describe. 



The following description of the symptoms, by the 

 Iowa State Board of Health, is excellent: "The pres- 



