328 REPORT ON THE DISEASES OF FARM HORSES. 



coldness of extremities, and patches of perspiration ensue over 

 the body. The bronchial tubes also suffer more or less, and 

 modify or aggravate the symptoms as the case may be. 



If the chest be tapped with the fingers, a dull, heavy sound 

 is produced, in place of the sonorous tone of health. 



Consolidation of one lung is effected by exudation of plastic 

 material from the blood of the capillaries within the substance 

 of the lung tissue, and afterwards renders it impervious to the 

 action of air. The right lung usually suffers most, and some- 

 times alone. Pleurisy, or inflammation of the pleura, mostly 

 accompanies severe cases of pneumonia, and is then known by 

 the title of pleuro-pneumonia. 



Terminations of Pneumonia. — This may be effected in a 

 variety of ways, as resolution, abscess, gangrene, and death. 



Resolution is that termination which implies a removal of 

 the disease, the animal being generally convalescent early in 

 the second week, or perhaps sooner. In the other varieties or 

 terminations death usually takes place from the twelfth to 

 fifteenth day. 



P. M. Appearances. — Consolidation of affected lung. The 

 presence of interstitial exudation of lymph gives the substance 

 of the organ the mottled appearance of marble, not unlike the 

 liver, and is heavy, being unable to float, but sinks in water. 

 This is called hepatisation, from its resemblance to the liver. 



In other cases abscesses have formed in the substance of the 

 lung, which are filled with fetid matter. These sometimes 

 communicate with the lesser bronchial tubes, and thus partially 

 evacuate their contents, which gives rise to a peculiar, startling, 

 moist, hollow cough. Gangrene is the death or separation of 

 the part from the general circulation — a condition which soon 

 seals the fate of the animal ; while abscess does not immediately 

 cause death, but admits of the sufferer lingering on for some 

 time with wasting body, capacious appetite, and cavernous 

 cough, fetid breath, small weak pulse, &c, when absorbtion of 

 the matter from the surface of the bronchial tubes takes place, 

 and the end of the patient is arrived at by the setting in of 

 hectic fever. 



Treatment. — In the early febrile stages of acute pneumonia 

 abstract blood to the extent of six or eight cpiarts, according to 

 the size and condition of the patient. A laxative ball should 

 be given, and enemas of warm water used. Fleming's tincture 

 of aconite, 10 to 20 drops every ten hours, in cold water, or 

 extract of belladonna, one dram, with two of nitrate of potass, 

 in bolus or watery mixture, until the mouth begins to assume a 

 moist, cool condition. Warm rugs and bandages, as well as an 

 airy box, will be needed, a faithful attendant, trained to implicit 

 obedience, and the means of cure are greatly enhanced. 



