DISEASES OF THE NERVOUS 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 toa 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 
veterinary 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. 
