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why pasteur’s YAcciisrE fails to prevent hog cholera. 237 
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sease, affecting the same species of animals, differs so widely in 
characters, even though found in different countries. 
In another paper equally clear distinctions of a different na- 
re will be pointed out. 
5 th. Difference in symptoms between rouget and hog cholera . 
itliout going into details we desire to call attention to the fact 
at the common names of the plagues of different countries in- 
3ate the most characteristic difference between these diseases, 
ms in France it is called mol rouge (red disease), rouget , erysiple 
itagieux (contagious erysipelas), and in Germany we find the 
mmon name to be rothlauf , which is equivalent to erysipelas. 
1 of these names indicate the most prominent symptom of the 
>ease, viz.: the red and erysipelatous appearance of the skin. 
i the other hand, the American name, hog cholera, while it 
iynot give an entirely conect idea of the nature of the malady, 
rtainly indicates that its most constant and prominent symptoms 
3 due to an affection of the bowels. 
It is true that redness of the skin is sometimes seen in the 
nerican disease, but it is not at all constant, and it is only in 
*e instances that it is sufficiently intense to be called erysipela- 
is. Disturbance of the bowels is also seen at different times in 
iget, but, like redness of the skin in hog cholera, it is by no 
;ans a constant symptom. In these characters there is a very 
irked difference in the two diseases. 
6 th. Difference in the appearance of the organs after death. 
e post-mortem examination justifies the distinction which has 
I "n drawn above from the symptoms. One of the most constant 
I characteristic lesions of hog cholera is ulceration of the large 
I estines—an ulceration which is almost invariably present ex¬ 
it in those cases which succumb within a day or two after the 
i ginning of the attack. This ulceration is so apparent, so ex- 
II ‘sive, so impossible to overlook that we cannot believe it would 
ape the eyes of the Continental veterinarians who have studied 
Ir diseases so thoroughly. Neither Lafosse, Benion, Zundel, 
filer or Lydtin mention ulceration of the large intestines, 
lottelius found ulceration in one case, and Cornevin states that 
