Specific Contagious Diseases. 99 



contra-indicated, and bromide of potassium. The rhe^i- 

 matio complication must be treated like ordinary rheuma- 

 tism, with colchicum, salicin, salicylate of soda, propylamine, 

 acetate of potassa, turpentine, warmth, counter-irritants, etc. 



TYPHOID, GASTEIC, OB BILIOUS FEVEE. 



This strongly resembles the abdominal form of influenza 

 and sometimes occurs in the same place at the same time. 

 It also appears independently in horses weakened by shed- 

 ding their coats in spring and autumn, in those kept in a 

 hot, close, impure, and unwholesome atmosphere, fed insuffi- 

 ciently or on badly -preserved, musty, or otherwise injured 

 aliment, supplied with water containing an excess of decom- 

 posing organic matter, fed irregularly, subjected to over- 

 work, etc. Finally it proves contagious in confined, insalu- 

 brious buildings, and to a less extent, in those that are 

 wholesome and well aired. Some unknown, generally acting 

 influence makes it more virulent at one season than at an- 

 other. . 



Symptoms. There are a few days of dullness and lassi- 

 tude followed by the general signs of fever ; Staring coat, 

 shivering, alternate heat and coldness of the surface, rest- 

 lessness, hot, dry mouth, and elevation of the internal tem- 

 perature of the body. There is a yellowish tinge of the 

 mucous membranes, costiveness, colicky pains, full, tense, 

 tender belly, passage of a few dark, hard pellets of dung 

 covered with a mucous film, urine scanty, reddish, and de- 

 positing a sediment, pulse rapid and weak, and there may 

 or may not be sore throat, excited breathing, and discharge 

 from the nose. In the more favorable cases, signs of im- 

 provement are noticeable in eight or nine days, and a per- 

 fect recovery is made. In the unfavorable, the pulse be^ 

 comes small, weak and rapid (eighty to ninety per minute), 

 the mouth hotter, more clammy, and covered by yellow- 



