40 Report oF DEPARTMENT OF ANIMAL HUSBANDRY OF THE 
to buy cows to replace the diseased ones, and even if bought sub- 
ject to the tuberculin test there was a strong probability that they 
would not all be sound animals.” 
It was accordingly decided to apply the Bang method as soon as 
suitable quarters could be provided for the two herds. A substan- 
tial addition to our stables was then being built and was ready for 
use in March, 1901. 
PARA TAL*SE RAR ATO NSO hee bir sr tee 
Ten cows and six calves were transferred to this new stable in 
March, 1901. Because of the time which had elapsed since the 
test, cows were selected from those which had not reacted at the 
previous test and included only the two oldest non-reacting 
heifers. Five of the calves had been dropped since the previous 
test and had been raised on pasteurized milk.1§ 
The remaining heifer, Nellie, was so young at the time of the 
first test that she was not tested at that time. 
While this division of the herd was made as the result of the 
test it should not be forgotten that this test had been made some 
three months previous to the date of separation. During this 
interval the cattle had all been kept in the same stable or had 
occupied the same paddock. 
CHANGES NV Lil Gee 
During the interval between the discovery of tuberculosis in 
November, 1900, and the separation of the sound and reacting 
animals into two herds in March, 1901, five cows passed out of 
the herd. Two of the reacting cows died with milk fever and a 
third became so lame with a tuberculous joint that she was killed. 
One reacting and one sound cow were sold for beef. March 25, 
I9Q0I, we received a heifer calf Carey in exchange for bull-calves. 
“These failures to detect the disease are largely due to the period of 
incubation. (See page 30.) This is well illustrated by a cow purchased in 
1904 from a herd containing tuberculosis. A few days after her purchase 
she did not react to the tuberculin test. She remained in our sound herd 
for six months and at that time gave a good reaction. An autopsy made 
six months later showed two small tubercles in the glands of the neck and 
one small one in the lung. 
* The milk was heated to 85°C. (185°F.) in a continuous pasteurizer such 
as is commonly used in connection with butter making. 
