CONTAGIOUS DISEASES OF THE HOKSE. 341 



lips. They vary in size from that of a nut to a hen's egg, and 

 are filled with serum. The tumors are of a yellowish-gray color 

 resting on the surface of the mucous membrane. The tongue 

 swells and hangs out of the mouth, taking a bluish, mulberry 

 color. The swelling extends to the throat, and the animal dies 

 from suffocation. 



Treat.mext.- — Preventive is of the greatest importance. A 

 seton inserted in the breast is recommended as the best preventive 

 measure, with the addition of four drachm doses of chlorate 

 of potash dissolved in the drinking water, or given in a drench 

 dissolved in a pint of water. The pasture should be changed. 

 If it occurs on a rich pasture change to a poorer one. The disease 

 usually occurs on rich pastures, and on dry soils in damp seasons. 

 If the disease is not fully developed, treatment may be tried. 

 The tumors may be dressed with one part of carbolic acid to 

 four parts of sweet oil. Three drachms of chlorate of potash to 

 one pint of water should be given. Twenty drops of carbolic 

 acid; glycerine, one-half ounce; water, one pint, should be tried. 



VARIOLA EQUINA, OR HORSE POX. 



This is an eruptive disease, similar to cow-pox affecting cows. 

 The eruptions are preceded by a very slight fever. The eruptions 

 appear on the skin over the whole body. Variola is transmissible 

 from horse to horse, to the cow, and mankind. It is a very mild, 

 benignant disease, and is not beneficially influenced by the action 

 of medicine. 



STRANGLES 



Is a contagious disease peculiar to the horse. The disease may be 

 induced by inoculation. It generally i)revails in the springtime. 

 It is accompanied by well-:yiarked febrile symptoms, attacking 

 young horses, and terminating in the formation of an abscess in 

 the areolar tissue of the submaxillary space. It may affect horses 

 of any age, but is not transmissible to man or other animals. 

 There are two forms of strangles, the regular and irregular. The 



