I2 STORRS AGRICULTURAL EXPERIMENT STATION. 
placed at the disposal of the Station. These cows have been 
held in quarantine and used for certain experiments on the 
effects of the milk of diseased cows when fed to calves, and, 
incidentally, to study the efficiency of the tuberculin test as a 
diagnostic agent in the detection of tuberculosis. One reason 
for choosing these particular animals was that the disease was 
supposed to be in its earlier stages at the time they were 
brought to the Station. ‘Thus far the experiments imply that 
healthy calves may be reared on the milk: of tuberculous 
cows where the disease has not attacked the udder. The 
results from the use of tuberculin seem to indicate that its eff- 
ciency as a diagnostic agent is not as great as has sometimes 
been claimed. Why animals respond at one time to the test 
and do not respond at another we cannot even conjecture 
safely. Wecan, however, say that much remains to be learned 
regarding the tuberculin test and its value, and regarding the 
dangers to our herds and to human lives from tuberculosis. 
FEEDING EXPERIMENTS WITH DOMESTIC ANIMALS. 
These have included during the past year digestion experi- 
ments with sheep and experiments on the effect of fodder upon 
milk production by dairy herds. 
Digestion Experiments with Sheep.—These have been made 
during the past, as in previous years, on certain forage crops, 
grain feeds, and concentrated by-products. They not only 
have a value for increasing the general fund of information 
regarding the digestibility of feeding stuffs, but are of direct 
use in connection with the feeding experiments with milch 
cows. It has been found by comparative experiments that the 
digestibility of the same kind of feeding stuffs is very nearly 
the same with cows as with sheep. Hence the results of diges- 
tion experiments with sheep may be taken as measuring the 
digestibility of different feeds by cattle. The greater ease with 
which sheep can be handled in digestion experiments is the 
principal reason for using them instead of cows. 
feeding Experiments with Dairy Herds.—The importance of 
dairying as a branch of agriculture in this State has led to con- 
siderable study of the effects of feeding upon the milk production 
of cows. In previous years a part of the work of the Station 
in this line has been carried out in its own stables, especial 
