134 fna HORsa. 



great depression of muscular force; the animal stands limp as if excess- 

 ively fatigued. There is diminution, or in some cases total loss, of 

 sensibility of the skin, so that it may be pricked or handled without 

 attracting the attention of the animal. On movement, the horse stag- 

 gers and shows a want of coordination of all of the muscles of its limbs. 

 The senses of hearing, sight, and taste are diminished, if not entirely 

 abolished. The visible mucous membranes (as the conjunctiva), from 

 which it is known as the "pink eye," and the mouth and the natural 

 opening become of a deep saffron, ocher, or violet- red color. This latter 

 is especially noticeable on the rims of the gums and is a condition not 

 found in any other disease, so that it is an almost diagnostic symptom. 

 If the animal is bled at this period the blood is found more coaguable 

 than normal, but at a later period it becomes of a dark color and less 

 coaguable. There is great diminution or total loss of appetite with an 

 excessive thirst, but in many cases in cold-blooded horses the animal 

 may retain a certain amount of appetite, eating slowly at its hay, oats, 

 or other feed. 



Complication of the I<ung-S. If at any time during the course 

 of the fever the animal is exposed to cold or draughts of air, or in any 

 other way to the causes of repercussion, the lungs may be affected. In 

 the majority of cases; however, after three, four, or five days of the 

 fever, the congestion of the lungs commences without any exposure or 

 apparent exciting cause. This is due to the alteration of the blood, 

 which allows a more easy osmosis of the blood into the surrounding tis- 

 sues and to the checking of the capillary blood vessels, produced by the 

 increased rapidity and force of the circulation. Unless this congestion 

 of the lungs is relieved at once it is followed by an inflammatory product, 

 a fibrinous pneumonia. The pneumonia, while it is in its essence the 

 same, differs from an ordinary pneumonia at the commencement by an 

 insidious course. The animal commences to breath heavily, which be- 

 comes distinctly visible in the heaving of the flanks, the dilation of the 

 nostrils, and frequently in the swaying movement of the unsteady body. 

 The respirations increase in number, what little appetite remained is lost, 

 the temperature increases one to two degrees, the pulse becomes more 

 rapid, and at times, for a short period, more tense and full, but 

 the previous poisoning of the specific disease has so weakened the tis- 

 sues that it never becomes the characteristic full, tense pulse of a simple 

 pneumonia. 



On percussion of the chest dullness is found over the inflamed areas- 



