

TUBERCULOUS COWS AND USE OF THEIR MILK. Dee 
the birth of the calf developed a severe case of tuberculosis.* 
The calf dropped by this cow has appeared healthy and 
vigorous from the first. The plan of the test with these two 
calves was to pasteurize one-half the milk of cow No. 1341 
and feed it to its own offspring, calf E, and to feed the balance 
of the milk, in its normal condition, to a calf from a healthy 
cow. Calf I was chosen for this purpose, because it was sup- 
posed that its dam was free from tuberculosis, not having re- 
sponded to the test made December 30-31, 1897. 
The feeding test has been continued the same as though 
this calf was from a perfectly healthy cow. Both of these 
calves have been kept in a room entirely separate from the 
tuberculous cows, and the two calves have been separated from 
each other by a double slat partition in such a way as to pre- 
vent their licking one another. The portion of the milk of 
cow No. 1341 which was fed to calf E has been heated to a 
temperature of from 170-175° F., and diluted with cold water 
before feeding. The balance of the milk of the same cow, in 
its normal condition, has been fed to calf F as soon as possible 
after milking. Both calves have had a small quantity of bran 
added to the milk since they were about two months old. 
These calves were tested with tuberculin December 22-23, 
1898, after having been fed the milk of cow No. 1341 for 
about four months, but gave no response to the test. Both 
have grown rapidly, and are in a strong, vigorous condition at 
the present writing (February, 1899). 
Feeding calf G.— This was a small heifer calf dropped by 
cow No. 1343, August 28, 1898. The calf was small at birth, 
afd has appeared rather puny ever since. It has been 
fed the milk of its dam since birth, although it has not eaten 
well, and has only consumed small quantities of milk. The 
calf has seemed to lack vigor, and has remained thin in flesh 
and has grown slowly. It did not respond to the tuberculin 
* This cow was tested with tuberculin December 30-31, 1897, but gave no response 
tothetest. Shecalved August 27, 1898, and appeared in a healthy, vigorous -condi- 
tion until the herd was placed in winter auarters early in November. Soon after, 
she began to refuse silage, and dropped off rapidly in milk flow, but manifested no 
serious symptoms until about ten davs after she began to refuse silage. At that 
time the cow began to scour badly, and was placed in a box stall away from the rest 
of the herd For the next ten davs she ran down in flesh rapidly so that it was 
thought wise to destroy her. A fost mortem examination showed a severe case of 
tuberculosis, the tubercles being present in the liver, the spleen, and the lungs. 
Some of the lesions were encysted in such a way as to indicate that the disease was 
one of long standing, and it is probable that the tuberclin test which was made 
eleven months previous to the time of killing the cow failed to cause a response, 
owing to the advanced condition of the disease, or the failure may have been due 
to a poor lot of tuberculin. The cow showed no outward appearance of the disease, 
and remained in good condition of flesh until she began to refuse her feed early in 
November, 1808. 
