PARASITIC DISEASES 



165 



the above, but are not as effective as when used 

 as a dip. When these methods are used, the hogs 

 should be crowded into a small pen and kept 

 moving about so that they will rub against one 



FIG. 17 — ^DIPPING TANK 



another. Kerosene remedies should not be used 

 during the day and the pigs allowed to run in 

 the hot sun, as there is danger of the skin be- 

 coming irritated. A better time is in the evening. 

 The necessary precautions against reinfection 



