American Veterinary Review. 
MARCH, 1902. 
RoscM°R n nM^ K frJ mbl ^i? t - ° r i n re f‘ rmce thereto should be addressed to Prof. 
Koscoe R. Bell, Seventh Ave. & Union St., Borough of Brooklyn , New York City. 7 
EDITORIAL. 
EUROPEAN CHRONICLES. 
Contagious Pleuro-Pneumonia.— Remarks upon this sub¬ 
ject may be of secondary importance to our American colleagues, 
the disease having been wiped out so thoroughly and so care¬ 
fully kept away by our Bureau of Animal Industry, and yet for 
many^ theie are still facts of interest to know, and it is in that 
direction that Prof. Nocard, after his great discovery of the mi¬ 
crobe of pleuro-pneumonia, sets himself to work. 
. An _ important question, and one of the most interesting 
points in the history of the disease, was that in relation to the . 
modes of contagion. How does the infection take place ? How 
are the organisms of those which are near the sick animals in¬ 
vaded by the contagious element ? 
The pleuro-pneumonia animal coughs frequently ; it then 
throws quantities of fine droplets of mucus, which float in the 
atmosphere or drop on the solid or liquid food of its neighbors : 
those droplets are no doubt the principal agents of contagion. 
But how do they enter the organism? By the digestive appar¬ 
atus or through the respiratory channel ? 
These questions have just been answered by a series of ex¬ 
periments, and the firm conclusions of Prof. Nocard are that it 
is by the respiratory organs that the infection takes place ; that 
the ingestion of virus, even in large quantities, does not give 
the disease, and does not confer immunity against a natural ex- 
peri mental attack. 
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