CHAP. I.] LOW FEVER ; SYMPTOMS. 193 



happens, such knocked-up horses are considered as 

 done for, and the owner sells off; whereas expe- 

 rience tells us, that a nourishing regimen would re- 

 store them to their wonted vigour ; for the serous 

 or watery part of the blood (book i. sect. 20, 21.) 

 having been drained off by the violent perspiration 

 they were exposed to by their summer work, the 

 muscular fibres become rigid, and the blood too 

 thick for circulating in the finer vessels ; it, there- 

 fore, remains rioting in the larger ones, distending 

 their capacity and increasing the irritation. Work- 

 ing horses are then usually deprived of their corn, 

 because they cannot work ; this only adds to the 

 irritation of the vascular system and solids, which 

 constitutes the low fever we are now considering. 



Symptoms. — Parallels, or distinctive character- 

 istics of such diseases as somewhat resemble each 

 other, are, therefore, very proper, inasmuch as they 

 prevent those dangerous mistakes that happen in 

 the human practice as often as in the veterinary. 

 Such parallels are, therefore, particularly serviceable 

 to veterinarians : for this reason it is we recommend 

 the reader to compare what is said of the symptom s^ 

 of high fever, just above, with the present page, 

 as regards the symptoms of low fever. They are 

 placed near together for that purpose, as we then 

 said (at page 174.) The pulse > in this case, never 

 mounts high during an entire minute, but beats 

 quick a few strokes, and then slow, and so low as 

 scarcely to be perceptible ; this denotes, that though 

 fever be present, there is not strength sufficient to 



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