DISEASES OF THE NEEVOUS SYSTEM. 237 



Treatment. — Excision of the tumor, including part of the nerve 

 above and below, and then treat it like any other simple wound. 



INJURIES TO NERVES. 



These may consist in wounding, bruising, laceration, stretching, 

 compression, etc. The symptoms which are produced will depend 

 upon the extent, seat, and character of the injury. Recovery may 

 quickly take place, or it may lead to neuritis, neuroma, or spinal or 

 cerebral irritation, which may result in tetanus, paralysis, and other 

 serious derangements. In all diseases, whether produced by some 

 form of external violence or intrinsic causes, the nerves are necessa- 

 rily involved, and sometimes it is to a primary injury of them that the 

 principal fault in movement or change of nutrition of a part is due. 

 It is often difficult or impossible to discover that an injury to a nerve 

 has been inflicted, but whenever this is possible it may enable us to 

 remedy that which otherwise would result in permanent evil. Treat- 

 ment should consist in relieving compression, in hot fomentations, 

 the application of anodyne liniments, excision of the injured part, 

 and rest. 



FORAGE POISONING, OR SO-CALLED CEREBROSPINAL MENIN- 

 GITIS. 



This disease prevails among horses in nearly all parts of the 

 United States. Its appearance in America is by no means of recent 

 occurrence, for the malady was reported by Large in 1847, by 

 Michener in 1850, and by Liautard in 1869 as appearing in both 

 sporadic and enzootic form in several of the Eastern States. Since 

 then the disease has occurred periodically in many States in all sec- 

 tions of the country, and has been the subject of numerous investi- 

 gations and publications by a number of the leading men of the 

 A'eterinary profession. It is prevalent with more or less severity 

 every year in certain parts of the United States, and during the year 

 1912 the Bureau of -Animal Industry received urgent requests for 

 help from Colorado, Georgia, Iowa, Kansas, Kentucky, Louisiana, 

 Maryland, Missouri, Nebraska, New Jersey, North Carolina, Oregon, 

 South Carolina, South Dakota, Virginia, and West Virginia. While 

 in 1912 the brunt of the disease seemed to fall on Kansas and Ne- 

 braska, other States were also seriously afflicted. In previous years, 

 for instance in 1882, as well as in 1897, the horses of southeastern 

 Texas were reported to have died by the thousand, and in the follow- 

 ing year the horses of Iowa were said to have "died like rats." 

 However, Kansas seems to have had more than her share of this 

 trouble, as a severe outbreak that extended over almost the entire 

 State occurred in 1891, while in 1902 and again in 1906 the disease 

 recurred with equal severity in various portions of the State. 



