INFECTIOUS DISEASES OF ANIMALS. 
191 
man did nothing to check its spread and the outbreak became 
very general. They did not even obey the most explicit direc¬ 
tions of the law. Three adjoining townships received infections 
from these two, but infected places were quarantined and in no 
case did the disease spread beyond the first quarantine. The 
two generally infected townships reaped a disastrous harvest. 
This would not be so bad if thev had not been a constant source 
of danger for adjoining townships where the chairman and farm¬ 
ers were law abiding. 
An interesting situation developed in connection with an 
outbreak in Polk and Red Lake counties. During the course 
of our work last season we learned that hogs had died on a cer¬ 
tain farm during the previous fall. Dead hogs were thrown into 
Red Lake River in the northern part of Gentilly township. 
Red Lake River is reported as having a very sluggish stream, 
and in the early spring outbreaks appeared on a series of farms 
along this river, down stream. The disease was then carried 
from these farms to the surrounding country and a very serious 
outbreak of hog cholera was the result, and yet intelligent peo¬ 
ple say that hog cholera spreads in the air and in a great variety 
of mysterious ways, and hog cholera is just hog cholera and 
there is no use in attempting to do anything with it. The out¬ 
break just referred to had its plain origin when the careless 
farmer threw dead hogs into the sluggish stream. 
It is very probable that there have been few outbreaks of 
hog cholera in Minnesota where the method of spread was not 
simple and easily understood if we could only get the facts. 
Mr.-, of Greenville township, Dakota county, as¬ 
sisted a friend to load a car of hogs, and during this work he 
was in the stock car. After finishing the work he went home 
and took care of his own hogs. In about two weeks cholera 
broke out in his herd with no other cases in the vicinity, and 
yet he only walked around in the stock car and some railroad 
shipping pens. 
Mr. G. went to Shakopee and attended a street fair. 
Bought seven young pigs. Took them home. In a few days 
