628 SPORADIC DISEASES. 



and even in the earliest stage, if the animal be thirsty, water is 

 to be freely allowed; doses of nitrate of potash given in the 

 water or mash ; the air of the stable must be abundant and pure 

 — but the horse is not to be exposed to draughts — and the body 

 kept warm by clothing. 



POST MORTEM APPEAEANCES. 



The post mm^tem appearances are, congestion of the pulmonary 

 vessels, with rupture of some of them, and extravasation of blood 

 into the parenchyma, constituting pulmonary apoplexy, whilst 

 others are plugged by emboli. The lungs resemble the spleen, 

 and the term splenification has been applied to this condition. 

 When cut into, the lungs present a deep, dark, purple colour, 

 the vessels are filled with dark blood of a tarry consistence, 

 whilst here and there, interspersed throughout the lung 

 substance, darker points are seen, indicating where extra- 

 vasation has occurred. Although much heavier and more 

 condensed than natural, the lung tissue will generally float 

 in water; thus differing from the condition of hepatization, 

 which is present when death has occurred from pneumonia. 

 The right side of the heart and great veins are filled with blood 

 of a dark appearance and tarry consistence. The left side of 

 the heart also contains some quantity of blood of the same 

 appearance and consistence. 



It may be stated that hypostatic congestion may occur post 

 mortem or during the death struggle. This always occurs in 

 the most depending part of the lungs, is to be distinguished by 

 its situation and the antecedent symptoms, the animals having 

 died from other diseases, and is not to be confounded with any 

 diseased condition of the lungs. 



