296 



INFECTIOUS DISEASES 



or in case a part of the pasture is swampy, we may prevent 

 further loss by fencing off this portion. Drinking pLaces that are 

 convenient and free from hlth should be provided. Watering 

 troughs and drinking fountains should be cleaned and disin- 

 fected every few weeks. For this purpose, use a three per cent 

 water solution of a cresol disinfectant, or a ten per cent water 

 solution of sulfate of iron. Dusty quarters should be cleaned 

 and disinfected. Dirt floors may be sprinkled with crude oil. 



Fig. 102. — A yearling steer affected with septicemia hemorrhagica, intestinal form. 



All of the animals in the herd sliould be vaccinated with 

 hemorrhagic septicemia bacterin. Cattle pasturing in a field 

 where the disease has been known to occur fiom year to year, 

 should be protected by vaccination. 



Anthrax, Charbon. — This is an acute infectious disease af- 

 fecting many different species of animals. Anthrax is one of 

 the oldest animal diseases, and early in the history of the race 

 it existed as a plague in Egypt. It most cc-xiimonly affects cattle, 

 sheep and horses. Man contracts the disease by handling wool 

 and hides from animals that have died of anthrax, and by acci- 



