62 STORRS AGRICULTURAL EXPERIMENT SLACLOIMy 
method of doing this is by adopting some such rules as the 
following: , 
1. Never allow new animals to enter the herd unless the 
tuberculin test has shown them free from the disease. 
- 2, Ifskim-milk is obtained from a creamery, do not feed 
it to calves (or pigs) without boiling. | 
3- Do not allow strange animals to mingle with the herd 
or enter the stalls occupied by the healthy animals. 
4. Do not allow consumptive persons to attend the cattle 
or prepare their food. 
These rules will probably keep the disease away from the 
herd. The rule to buy no animals without the guarantee of 
the tuberculin test is the most important one of them all. 
The farmer who already has the disease in his herd wants 
to know how to get rid of it. To do this he must build upa 
healthy herd. This is to be done as follows: In the first 
place, the task of eradicating tuberculosis from our herds 
must begin with the farmer and cannot begin with legislation. 
It is the farmer who is interested in the herd which he owns 
that must start this conflict with tuberculosis. Legislation 
may assist. Legislation may direct and advise, but unless the 
farmer himself takes the subject in hand and begins the battle, 
legislation will be very largely futile. Second, the key to the 
whole problem of getting rid of tuberculosis in our herds is 
isolation, and not universal slaughter. If we can isolate all 
animals as soon as they show even incipient signs of this dis- 
ease from the others, we have every reason to believe that we 
can soon reduce the trouble and bring it within manageable 
limits. This isolation simply means a separation of the ani- 
mals from the others, and does not mean their slaughter or 
their loss. It means simply that they are prevented from con- 
taminating the rest of the herd. 
For the purnose of this isolation there is only one prom- 
ising method of attack, and that is by the use of tuberculin. 
Clinical symptoms alone are not sufficient. Tuberculin is 
perfectly satisfactory for this purpose, since it will, beyond 
question nick out every case of incinient tuberculosis and thus 
sive the farmer data by means of which he can undertake this 
isolation for the purpose of getting rid of the disease. With- 
out the use of tuberctlin there is little use for the farmer at- 
temptine anvthine. He must let things drift from bad to 
worse, only pickine out the worst cases. 
This isolation of the animals must be complete, it must be 

