New YorK AGRICULTURAL EXPERIMENT STATION. 45 
A few of the tuberculous cows were killed in order to clear up 
certain questions which arose in connection with the work. 
The milk from the tuberculous herd was handled in entirely 
separate utensils and was passed through a continuous pasteurizer 
at 85°C. (185°F.). It was then considered harmless*! and the skim 
milk was fed to the calves and the cream made into butter. During 
a considerable period the milk was used,after being thus pasteurized, 
for the local milk trade with entire satisfaction. 
The calves from the tuberculous cows were at once removed to 
the sound herd and were fed on the full milk of the sound cows 
and later upon the mixed, pasteurized, skim milk from both herds. 
CHANGES INDUCED BY THE BURNING OF THE BARNS. 
In May, 1902, the Station barns were destroyed by fire. This 
fire started in the upper portion of the new stable and spread so 
rapidly that three calves and one two year old heifer from the 
sound herd were destroyed. In the confusion attending the re- 
moval of the cattle from the stables both herds were allowed to 
mingle and remain together for a few hours. They were, however, 
promptly separated and placed in temporary quarters. 
Up to this time we had accurate records of the food consumed 
and milk produced by each animal. From this data we hoped to 
obtain some information concerning the relative profit of keeping 
tuberculous and sound cows. All of these data were lost through 
the burning of the barns and until some months later it was not 
practicable to continue these observations. It then seemed neces- 
sary and dispose of all of the least promising cows on account of 
the lack of stable facilities. A comparison of the relative profit 
after such a process of selection would be of little value and has 
not been attempted. 
PROGRESS OF THE EXPERIMENT. 
Test of June, 1902.—At this test we had thirteen sound animals, 
twelve from the last test and a calf from the tuberculous Millie D. 
The fourteen diseased animals all reacted, including Kittie who 
had failed to do so at the test in IgoI. 
* The fact that all of the 25 calves fed with this milk remained free from 
tuberculosis is good evidence that it was really harmless. 
