As es 
re ho ee 
3 
ee 
166 STORRS AGRICULTURAL EXPERIMENT STATION. 
one-half years after their arrival, entirely different results are 
recorded, During the period from August 15, 1898, to March 
20, 1900 (nineteen months), five animals were fed the milk of the 
same lot of cows, and all five responded to one or more tuberculin 
tests made within that period, and proved to be diseased. Two 
cases developed within three months after birth, while the other 
three required from twelve to eighteen months for their develop- 
ment. Lhe physical condition of the cows, for the past year, 
would seem to indicate that the disease has progressed decidedly 
zn at least three of the four cows. 
PRACTICAL DEDUCTIONS. 
During the first two years it was practically tmpossible to detect 
any outward signs of tuberculosis in the cows, and careful physical 
examination by an expert only revealed a possible presence of the 
disease tn one of the four animals, and a probable diseased con- 
dition tn one other. During the past year and one-half, how- 
ever, there have been noticeable outward szgns of poor health, 
pointing towards a tubercular condition, and physical examtina- 
lion showed quite conclusive evidence of the disease in three of the 
four animals. The fact that no secondary case of the disease 
developed until the calves had been fed the milk of the cows from 
one to one and one-half years, and had been associated with the 
cows for about two years, would seem to show that there ts Iittle 
danger of the spread of the disease, where tt exists in the earlier 
stages. . 
In the feeding tests for the first two years the young antmats to 
which the milk was fed were kept, most of the time, in the same 
stable with the cows. Four calves were fed the milk of the 
luberculous cows in periods ranging from nine months to eighteen 
months without showing any signs of the disease. The first case 
among the young animals was discovered about six months after 
the feeding of milk was discontinued. 
Ln the second lot of feeding tests six calves were fed. Three of 
these were kept in a separate part of the barn from the cows, and 
three in the same stable. Two calves, one tn the stable and one 
kept in another part of the barn, responded to the tuberculin test 
wethin three months after the feeding of the milk was begun. 
Of the other four, two responded soon after returning from the 
pasture where they had been for four months Jollowing a feeding 

