EXPERIMENTS WITH TUBERCULOUS COWS. il ee 
sertously injured by the wider spread of tuberculosis among thetr 
herds, tt ts of the utmost importance that each one use every effort 
to free his herd from the disease. 
Cows should be examined carefully for physical symptoms of 
the disease and be tested with tuberculin, and any that respond at 
all should be looked upon with suspicion. Whatever disposition 
7s finally made of those that are diseased, they should be kept at 
all times completely separated from those that are not, and the 
non-affected animals should be carefully watched and be tested 
wrth tuberculin at least once a year. Only in this way can new 
cases be discovered in their earlier stages. Unless the farmers 
can be brought individually to appreciate the gravity of the mat- 
ter to themselves and the menace to thetr industry, and to take 
measures for destroying the disease in their own herds, the his- 
tory of bovine tuberculosis in europe, where in some regions the 
greater portion of the cows are infected, may easily be repeated in 
this country. 
