3G0 ENZOOTIC AND EPIZOOTIC DISEASES. 



The symptoms are as follows : — Some degree of lassitude ; 

 more or less failure of the appetite ; the animal is inclined to be 

 sluggish ; his movements are clumsily performed, and he is 

 inclined to "trip" with his toes; the eyes are heavy, eyelids 



Fig. 20. — Microbes, mostly in pairs (Diplococci). x 800. 

 (New Veterinary College Museum.) 



partly closed, in many cases some increased redness and some 

 swelling of eyelids^ with a discharge of tears over the face, and 

 sometimes opacity of the cornea, and fibrinous clots in the 

 aqueous humor of the eye. 



If examined at this stage, the temperature may be from 102° 

 to 104°, or even 105° ; the pulse from 60 to 70 per minute ; 

 respirations not particularly hurried ; and if the horse be stopped 

 from all work at this period the severity of the disease may 

 increase, but very slightly, and recovery may be expected in the 

 course of a week or nine days ; but if the animal be kept at 

 work, or, even if not working, in a badly ventilated or other- 

 wise improper stable, the symptoms rapidly increase in severity, 

 the temperature rises to 106°, 107°, or even as high as 108°, the 

 respirations hurried, the pulse, increased in frequency to 80 or 

 even 110 beats per minute, is small and sometimes almost too 

 indistinct to be felt by the most practised touch ; the animal 

 becomes excessively lame, sometimes immoveably so ; or he is 

 continually resting or pointing one foot and then the other, as if 



