PRIZE ESSAY. 
391 
made to establish a relationship between the former and human 
variola, from which it differs as widely as the latter does from 
cow-pox. Horse-pox prevails entirely independently of small-pox 
or cow-pox. In some countries it is often present as an epizooty 
—as in Lower Canada; while in other regions, where it is enzoo¬ 
tic, it will be more common in one part than another—as at Paris, 
where it is well-known, and at Lyons, where, according to Chau- 
veau, it is not seen. 
{To be continued .) 
PRIZE ESSAY. 
By J. T. Duncan, V.S. (Toronto.) 
CONTAGIOUS DISEASES OF CATTLE. 
(Continued from page 350.) 
PROTECTIVE MEASURES. 
The question of what steps should be taken once this plague 
appears in a country, is of the greatest importance to the com¬ 
munity at large. Fortunately, so far, with this question the 
Dominion has nothing to do. But to be forewarned is to be fore¬ 
armed, and considering the possibility of its introduction here, 
the proper course of action should now be determined on, in such 
an event. 
Given the presence of this plague, then, two means of dealing 
with it present themselves, viz.: “ Stamping out ” and Inocula¬ 
tion. I say two, for no veterinarian worthy of the name would 
advise general treatment. 
First, as regards “ stamping out.” The advocates of this 
system are uncompromising, and will admit of no modification of 
their method, nor have they much patience with those who wish 
