INFECTIOUS DISEASES. 531 



results of nefjloct of tliii- pivcuution. 11" the fever is excessive, the 

 horse may receive smnll (jiiaiitities of Glauber's salt (handful three 

 times a day) as a laxative, l)i( arhonate of soda or niter in one-dram 

 doses every few hours, and small doses of antimony, iodid of j)otash, 

 aconite, or quinin. Stt'amin*r the head with the vapor of warm 

 water poured over a bucket of bran and hay. in which belladonna 

 leaves or tar have been placed, will allay the inflamuuition of the 

 mucous membranes and trieatly ease the cough. 



The swellin*; of the tflands should i)e promptly' treated by flaxseed 

 poultices and baihiiiix with warm \\ater, and as soon as there is any 

 evidence of the formation of matter it should be opened. Prompt 

 action in this will often save serious complications. Blisters and irri- 

 tating liniments should not be applied to the throat. When lung 

 complications show themselves the horse should have mustard ap- 

 plied to the belly and to the sides of the chest. When convalescence 

 begins great care must be taken not to expose the animal to cold, 

 which may bring on relapses, anil while exercise is of great advan- 

 tage it must not be turned into work until the :iiiim:il has entirely 

 regained its strength. 



liacterial vaccines are now being extensively used for the preven- 

 tion and treatment of this disease. They are prepared from the 

 sj)ecific germ of the disease and frequently exert a very beneficial in- 

 fluence. A serum is also being prepared from horses, which is in- 

 jected with gradually increasing doses of this germ. This serum j)OS- 

 sesses consitlerable curative value and may prove especially valuable 

 in cases in which the animals have failed to respond to other forms 

 of treatment, or when vnluabh^ animals are affected with the disease. 



PURPURA HEMORRHAGICA. 



Synonyuift. — Auiisaic!! ; iH-u-cIiiiil l\'v«'r ; uit»ri>iis nuiculo.sus. 



Defmtion. — This disease is a septic bacterial intoxication, acute 

 and infectious in character, and is manifested by edematous swell- 

 ings of tlie subcutaneous coimective tissue, and hemorrhages on the 

 mucous membrane and in the internal organs. 



A previous attack of infliUMi/.a is a c(Mnmon predispusing i-ause of 

 this (lisease, wjiich appeals most freiiumtly a few weeks after con- 

 valescence is established. It occurs more fre(pu>ntly in those animals 

 which have made a rapid convalescence and are ajijxirently per- 

 fectly well than it does in those which have made a slower recovery. 



Anasarca conmiences by symptoms which are excessively variable. 

 The local lesions may be confined to a small portion of the animal's 

 body and the constitutional phenouiena be nil. The a|»pearance and 

 gravity of the local lesions may be so imlike. from difference of loca- 

 tion, that they seem to lu'long to a separate disease, and complica- 

 tions may completely mask the original trouble. 



