8 
GEORGE H. BAILEY. 
ing that of an excitant, it arouses the germs to increased activ¬ 
ity, and they rapidly increase in number, inducing that form of 
the disease recognized as “acute miliary tuberculosis.” This re¬ 
action is what brought tuberculin into disfavor as a cure. “ The 
remedy was worse than the diseased This result of tuberculin 
tests in the human patient, induced Professor Gutmann, of the 
Veterinary Institute at Dorpat, Russia, to test its applications to 
animals, and in 1891 he instituted a series of experiments in 
the tuberculosis tests followed by a series of post-mortem exam¬ 
inations through which he was able to demonstrate the pres¬ 
ence of the disease, and that it could be distinguished from 
other diseases that are attended with a rise of temperature ; and 
since then his discovery has been accepted by the veterinary 
profession throughout the civilized world. The theory has been 
advanced that repeated injections of tuberculin in cattle until 
they cease to react indicated that recovery is possible, but I be¬ 
lieve the better reasoning to be that the tendency is to make 
the disease more chronic and less acute; and if persisted in the 
result will show that the “ dead germs and the dead patient 
will be buried together. Cattle may acquire an immunity from 
its use, the same as people do from taking repeated doses of ar¬ 
senic, while its harmless effect upon a well animal can be best 
illustrated in the case of the Ayrshire cow “ Rena Myrtle ” in the 
Experimental Station herd of Vermont. This cow has been 
tested every six months since 1892, and in 1895 gave the larg¬ 
est milk and butter record they had ever got at the station from 
any cow of any breed, when she produced 546 pounds of but¬ 
ter. 
Among micro-organisms, the bacillus tuberculosis, although 
one of the most infinitesimal of them all (about one ten-thou¬ 
sandth of an inch in length), is at once a despot and a million¬ 
aire. He will live in ice, maintain vitality at temperatures be¬ 
low 150° F. (65.5 C.), resists moisture, drought and decay, and 
bids defiance to the germicidal action of the gastric juice. The 
czar of all mankind (as well as of all the Russias), and re¬ 
sponsible for more deaths among the human race than any other 
