80 
A. W. CLEMENT. 
If a piece of tissue from man, containing the organism, be 
inoculated into an animal, the chances of infection are in pro¬ 
portion to the susceptibility of the animal inoculat ed. If the 
same lesions are to be found in man and animals, if the prog¬ 
ress of the disease is the same in both individuals, and if the 
same organism is found in each, can any one doubt the iden¬ 
tity of the disease in man and animals? 
As I said in the beginning of this paper, the disease is the 
greatest scourge with which we have to deal. None of the 
so-called highly infectious diseases, such as cholera, yellow 
fever, small pox, can compare in mortality with it. 
In Paris in the year 1884, a year taken at random, out of 
56,790 deaths, about 15,000 persons died from tuberculosis, 
that is, a little over one-fourth of the deaths were from this 
disease. In Baltimore, for the year 1888-1889, the total 
deaths were 8,703, of which number 1,147 were due to tuber¬ 
culosis. In New York City, for the year 1888-1889, there 
were 5,913 deaths from this disease. These data give only 
the mortality from tuberculosis, and doubtless chiefly pulmo¬ 
nary tuberculosis. There is reason to believe that many 
deaths from tuberculosis affecting the joints, bones, lymph- 
glands, serous membranes and still other parts than the lungs 
do not appear in proper proportion in these reports of death 
rates. Moreover, a large number affected with tuberculosis 
recover. 
The percentage of deaths in animals from this disease it 
is of course impossible at present to obtain. There are, how¬ 
ever, some statistics with regard to the proportion of animals 
affected with tuberculosis as found at abattoirs and slaughter¬ 
houses, and, though of course less reliable, from ante-mortem 
diagnoses. In the report of the proceedings of the last Inter¬ 
national Veterinary Congress, the following statistics are 
given : From the abattoir at Brussels for 1889, the percentage 
of tuberculous animals is given as follows ; 1.2 per thousand 
for steers ; 1.9 per thousand for bulls ; 19.9 per thousand for 
cows, 0.1 per thousand for calves. In Amsterdam, out of 
13,207 cattle, 268 were tuberculous—2 per cent. Out of 15,- 
827 hogs, 63 were tuberculous, 0.4 per cent. At Utrecht, 
