The Vet. Book 



seclusion ; biting any objects confronting it. 

 Although thirsty, it is unable to swallow, owing 

 to extreme congestion of the throat. The bark 

 becomes altered, and, once heard, is easily re- 

 cognised again. In addition to the foregoing, 

 the animal bites at the seat of inoculation, and 

 attempts to swallow particles of foreign matter, 

 such as hay, straw and so forth. Delirium and 

 paralysis subsequently set in, followed by death. 

 The average duration of the disease is about six 

 days, whilst the period of incubation varies, but, 

 as a rule, is about six weeks, though in some cases, 

 six months. 



Red-water and Black- water 



This is a disorder affecting cattle and sheep, 

 more especially the former, chiefly young stock, 

 but there is a form of red-water which may come 

 on three weeks after calving and is called Part- 

 urient red-water, being a much more serious 

 malady than this affection in the young. Recent 

 investigations have shown that red-water is due 

 to a species of protozoa (minute organisms), which 

 assume a whip-like form. These invade the blood- 

 cells, causing the discharge of the colouring 

 matter, which passes off in the urine. These 

 organisms are said to be introduced into the blood 

 through the medium of the Cattle Tick, producing 

 what is known as " piro-plasmosis." At one time, 



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