DISEASES OP THE EESPIKATOEY ORGANS. 127 



SUPPURATION AND ABSCESS IN THE LUNG. 



There are instances, and especially when the surroundings of the 

 patient have been bad or the disease is of an especially severe type, 

 when pneumonia terminates in an abscess in the lung. Sometimes, 

 when the inflammation has been extreme, suppuration in a large por- 

 tion of the lung takes place. Impure air, the result of improper ven- 

 tilation, is among the most frequent causes of this termination. The 

 symptoms of suppuration in the lung are chronic pneumonia, a 

 solidified area of lung tissue, continued low fever, and, in some cases, 

 offensive 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 pleuropneumonia 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. Eough drenching or 

 drenching through the nostrils may cause this serious condition. 



HEMOPTYSIS, OR BLEEDING FROM THE LUNGS. 



^ Bleeding from the limgs 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. When the hemor- 

 rhage is from the lung it is accompanied with 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 (hertofore described as bleeding from the nose) the 

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

 is not accompanied with 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 perchlorid of iron, diluted 

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



