Symptomatology. 35 



most marked feature of the disease is the disorder of 

 the function of the heart. 



General Conditions.— At the first stage of the dise- 

 ase, the appetite of the animal is as good as usual, but 

 the patient shows a dull and fatigued appearance. The 

 movement of the limbs is somewhat interfered with. 

 The patient usually slightly responds to whipping and 

 sometimes does not react to the digital pressure at 

 the loin. It is liable to be greatly fatigued with light 

 exercises. As the illness progresses, the patient be- 

 comes dull and likes to stand still at a dark place 

 such as a corner of a stable, lowering its head. The 

 power of attention is so weakened, that the patient does 

 not seem to have any inclination to get rid of flies, 

 even if they swarm about it. With each febrile attack 

 its emaciation and weakness gradually increase and 

 finally the patient falls to the typical case of pernicious 

 anemia. As the fatal termination approaches, the animal 

 staggers, and lies down on its side ; for its hind quarters 

 do not have strength enough to keep it standing. 



Bodily temperature.— At the outset of the malady, 

 the temperature suddenly rises to 39°-40° C. and after 

 remaining so for a day or two (in some cases for many 

 days), it falls to normal very rapidly. Frequency of the 

 febrible attacks is variable. Of 274 cases, 116 had at- 

 tacks 2-9 times a month ; in 93, it came after a month ; 

 and in 30, after two months. After three months, the 

 frequency of recurrence decreases, as is shown in the 

 following six cases. The attack occurred once in 1 case, 

 twice in 3 cases, and three times in 2 cases after more 

 than six months. In one or two cases it came once 

 after seven months. In chronic cases, the animal keeps 

 up for some time a subfebrile condition of 38°-39° C. ; 

 sometimes such a case changes into an acute form with 



