386 The Diseases of Animals 
that are free from the disease are placed in uninfected 
quarters, where they cannot contract the disorder. It 
has been demonstrated that nearly all calves born of 
tuberculous mothers are free from the disease at birth. 
As soon as the calves are dropped, they are taken from 
the cows and placed in uninfected quarters, where they 
are fed on sterilized milk. The calves are tested in 
a short time, and should any respond they are removed. 
In most cases the calves are tested several times before 
reaching maturity. In this manner only healthy ani- 
mals are raised for breeding and dairy purposes, and 
tuberculosis is being eradicated from the Danish dairies 
without the serious loss that would result from the 
immediate destruction of all tuberculous animals. 
Professor Koch, the eminent German scientist who 
discovered the germ of tuberculosis, thinks that tuber- 
culosis of cattle is not communicated to man by any 
ordinary methods, and that there is no danger of per- 
sons contracting the disease from using the milk of 
tuberculous cows. Nor does he think that tuberculosis 
or consumption of man can be transmitted to cattle 
by ordinary methods. If this view is correct, the im- 
portance of tuberculosis resolves itself into the financial 
question of preventing the losses among cattle that 
result from this disease, which in itself is an impor- 
tant one. Whether there is danger to man or not, there 
is a strong prejudice against using the milk from cows 
that are known to be tuberculous, especially for chiid- 
ren and invalids; and it is unwise to run any risks 
with this serious disease, considering the incompleteness 
of our present knowledge of it. 
