456 
A. W. CLEMENT. 
Dr. D. E. Salmon, chief of the bureau, has very kindly 
furnished this committee with the advance sheets of Bulletin 
No. 3, entitled “ Miscellaneous Investigations concerning 
Infectious and Parasitic diseases of the Domesticated Ani¬ 
mals,’’ in which appears an article on “ Some experimental 
observations on the presence of tubercle bacilli in the milk of 
tuberculous cows when the udder is not visibly diseased,” 
by Drs. Theobald Smith and E. C. Schroeder. 
The milk from six tuberculous cows was inoculated into 
guinea-pigs with the following results: From cow No. 155, 
which presented marked symptoms of the disease and which 
at the autopsy showed very advanced lesions, five guinea- 
pigs were inoculated, one of which, inoculated two days be¬ 
fore death of cow, became infected. 
Cow No. 156, which had very extensive tubercles, proved 
negative in the inoculation of four guinea-pigs. Two pigs 
fed with the milk of these cows failed to contract the disease. 
Cow No. 233, which had advanced general tuberculosis, 
with slight infection of the udder glands, gave positive results 
in eight guinea-pigs and negative results in two. 
Cow No. 234, which had extensive tuberculosis with udder 
glands normal, gave negative reaction in nine guinea-pigs in¬ 
oculated. 
Cow No. 303, which presented moderate tuberculosis, but 
with infection of the lymph glands behind the udder, gave 
negative resultsin one guinea-pig, the only one inoculated. 
Cow No. 314, having tuberculosis present in a moderate de¬ 
gree, but in which the udder was not affected, gave negative 
results in one guinea-pig inoculated. To summarize, then, 
positive results were obtained in guinea-pigs by the inocula¬ 
tion of the milk from two cows, and negative from the other 
four cows. One of the cows giving a positive result, No. 
303, had tuberculosis of the lymph glands just back of the 
udder. These experiments were conducted under strict 
antiseptic precautions and are valuable. 
Dr. A. IV. Clement , Chairman : 
Dear Doctor :—In Ma) r and June, 1892, I fed two half- 
grown pigs on milk from a cow with tuberculosis for a period 
