136 DISEASES OF THE HOKSE. ^ 



symptoms of suppuration in the lung are chronic pneumonia, a solidi- 

 fied area of lung tissue, continued low fever, and, in some cases, offen- 

 sive smell of the breath, and the discharge of the matter from the 

 nostrils. 



MORTIFICATION. 



Gangrene, or mortification, means the death of the part affected. 

 Occasionally, owing to the intensity of the inflammation or bad treat- 

 ment, pneumonia and pleuro-pneumonia terminate in mortification, 

 which is soon followed by the death of the animal. Perhaps'the most 

 common cause of this complication is the presence of a foreign body 

 in the lung, as food particles or medicine. Rough drenching or 

 drenching through the nostrils may cause this serious condition. 



Bleeding from the lungs may occur during the course of congestion 

 of the lungs, bronchitis, pneumonia, influenza, purpura hemorrhagica, 

 or glanders. An accident or exertion may cause a rupture of a vessel. 

 Plethora and hypertrophy of the heart predispose to it. Following 

 the rupture of a vessel the blood may escape into the lung tissue and 

 cause a serious attack of pneumonia, or it may fill up the bronchial 

 tubes and prove fatal by suffocating the animal. "WTien the hemor- 

 rhage is from the lung it is accompanied by coughing; the blood is 

 frothy, of a bright red color, and comes from both nostrils; whereas 

 when the bleeding is merely from a rupture of a vessel in some 

 part of the head (heretofore described as bleeding from the nose) the 

 blood is most likely to issue from one nostril only, and the discharge 

 is not accompanied by coughing. The ear may be placed against 

 the windpipe along its course, and if the blood is from the lungs a 

 gurgling or rattling sound will be heard. When it occurs in connec- 

 tion with another disease it seldom requires special treatment. When 

 caused by accident or overexertion the animal should be kept quiet. 

 If the hemorrhage is profuse and continues for several hours, 1 dram 

 of the acetate of lead dissolved in a pint of water may be given as a 

 drench, or 1 ounce of the tincture of the perchloride of iron, diluted 

 with a pint of water, may be given instead of the lead. It is rare 

 that the hemorrhage is so profuse as to require internal remedies. 

 But hemorrhage into the lung may occur and cause death by suffo- 

 cation without the least manifestation of it by the discharge of 

 blood from the nose. 



CONSUMPTION. 



Pulmonary consumption, or tuberculosis, has been recognized in 

 the horse in a number of instances. The symptoms are as of chronic 

 pneumonia or pleurisy. There is no treatment for the disease. 

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