2 Veterinaiy Medicine. 



able concurrent testimony to the same. Allowance must always 

 be made for the use to which tlie animal has been put, thus sexu- 

 ality tells strongly in tlie horse, bull, boar, or ram which has 

 been used for breeding and has become relatively indocile and 

 even dangerous ; food tells in the horse that " shows his corn ", 

 and in the dog fed on flesh ; the comparatively untrained English 

 race horse is far less docile than the one inured to saddle or har- 

 ness and the horse fresh from the range, though previously 

 trained, is far less tractable than the one in steady work. The 

 sexual products are especially liable to modify the temper, hence 

 the docility of the gelding, and castrated mare, and the undis- 

 turbed life and steady growth and fattening of castrated animals 

 from cattle to capons. 



The products of certain diseases "Awdi many drugs derange the in- 

 nervation and intellection. Of this we have examples in the 

 hebetude of the victims of milk sickness and dourine, in the wild 

 delirium of rabies, in the varied nervous disorders that attend on 

 the use of narcotics, essential oils, alcohol, chloral, sulphonal, 

 trional, strychnia, lead, phosphorus, arsenic, etc. • 



GENERAL SYMPTOMATOLOGY AND DIAGNOSIS. 



Motor disorders : paralysis, paresis, hemiplegia, crossed hemiplegia, spinal 

 hemiplegia, paraplegia, monoplegia, local palsy, pseudo-paralysis, spasm, — 

 tonic, clonic, tremor, hemispasm, monospasm, spasm of eyeball, spasm of 

 head, paraplegic spasm, general spasms — convulsions, local spasms. Inco- 

 ordination. Staggering. Reflex action. Morbid reflex: increased reflex, 

 reflex Ionic spasm. 



It seems desirable to note specially some of the more prominent 

 morbid nervous phenomena and conditions, with lesions or other 

 conditions which cause them, before considering what are usually 

 recognized as special diseases. 



MOTOR DISORDERS. 



Paralysis {Akinesis) is loss of voluntary or involuntary 

 muscular movement through defective innervation. 



Paresis is a paralysis which is partial in degree ; power of 

 motion is impaired but not completel}' lost. 



