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taking of indigestible food, or of food in too great quantities, or food 

 altered in any way by fungus or other injurious alterations ; the swal- 

 lowing of too cold water 5 or any other irritant may cause congestion. 

 This complication is ushered in by colics. The animal paws with the 

 forefeet and evinces a great sensibility of the belly ; it looks with the 

 head from side to side, and may lie down and get up, not with violence, 

 but with care for itself, perfectly protecting the surface of the belly 

 from any violence. At first we find a decided constipation j the drop- 

 pings if passed are small and hard, coated with a viscous varnish or 

 even consisting of false membranes. In from 36 to 40 hours the con- 

 stipation is followed by diarrhea. The alimentary discharge becomes 

 mixed with a sero-mucous exudation, which is followed by a certain 

 amount of suppurative matter. The animal becomes rapidly exhausted 

 and unstable, staggers on movement, losing the little appetite which 

 may have remained, and has exacerbations of fever. The pulse becomes 

 softer and weaker, the respiration becomes slowly more rapid, the tem- 

 perature is about 1° to 1^° F,, higher. If a fatal result is not produced 

 by the extensive diarrhea the discharge becomes arrested in from five 

 to ten days and a rapid recovery takes place. While the diarrhea com- 

 plication is a serious one, and may greatly weaken the animal, it rarely 

 becomes so intense as to assume the name of dysentery', and it rarely 

 becomes hemorrhagic ; it is rather a diarrhea of antemia. An enteri- 

 tis takes place in an animal weakened by the previous action of the 

 disease, and there is not sufficient vitality of the organ itself to resist 

 the inflammation, but this is a superficial inflammation, with destruction 

 only of the tissue of the surface of the intestines, which allows a rapid 

 healing. Rapid recovery takes place, and the promptitude with which 

 the intestines can commence to digest and assimilate food when the 

 diarrhea is checked is frequently surprising. 



Complication of the lungs. — 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 aff'ected. 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 appa- 

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

 allows a more easy osmosis of the blood into the surrounding tissues 

 and to the checking of the capillary blood vessels, produced by the in- 

 creased rapidity and force of the circulation. Unless this congestion 

 of the lungs is relieved at once it is followed by an inflammatory prod- 

 uct, a fibrinous pneumonia. This 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 

 becomes 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 re- 

 mained is lost, the temperature increases one to two degrees, the pulse 

 11035 31 



