216 BUKEAU- OF ANIMAL INDUSTKY. 



months or even j^ears. Neuroma iisuallj' develops within the sheath 

 of the nerve with or without implicating the nerve fibers. It is oval, 

 running lengthwise with the direction of the nerve. 



Symjjtovis. — Pain of the affected limb or part is manifested, more 

 especiall}' after resting a while, and when pressure is made ujDon the 

 tumor, it causes extreme suffering. 



Treatment. — Excision of the~ tumor, including part of the n(^r\-e 

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



INJURIES TO NERVES. 



These ma}' 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 necessarily 

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

 cipal 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 rem- 

 edy that which otherwise would result in permanent evil. Treatment 

 should consist in relieving compression, in hot fomentations, the appli- 

 cation of anodyne liniments, excision of the injured part, and rest. 



FORAGE POISONING, OR SO-CALLED CEREBRO-SPINAL MENINGITIS. 



This disease prevails among horses in nearly all parts of the United 

 States. It is most common in Maiyland, Delawar.e, Virginia, North 

 Carolina, New Jersey, Pennsylvania, New York, Kansas, Missouri, 

 Illinois, Indiana, and Ohio. Certain localities are visited by it almost 

 every j^ear. This condition consists in a poisoning and depression of 

 the nervous system from eating or drinking food or water containing 

 poison generated b}^ mold or bacteria. It has been shown to be due 

 to eating damaged ensilage, corn, brewers' grains, oats, etc., or to 

 drinking stagnant pond water or water from a well contaminated by 

 surface drainage. Horses at pasture may contract this disease when 

 the growth of grass is so profuse that it mats together and the lower 

 part dies and ferments or becomes moldy. 



In England a similar disease has been called "grass staggers," due 

 to eating rye grass when it is ripening or when it is cut and eaten 

 while it is heating and undergoing fermentation. In eastern Pennsyl- 

 vania it was formerly known by the name of "putrid sore throat" 

 and " choking distemper." A disease similar in many respects, which 

 is veiy prevalent in Virginia, especially along the eastern border, is 



