RELATION OF BOVINE TO HUMAN TUBERCULOSIS. I I 
He reasons from analogy that a careful study of the 
geographical distribution of tuberculosis reveals the fact 
that all people who use the milk and flesh of the domestic 
cow (the and inbred cow) as food products are more or 
less afflicted with tuberculosis, and further, that there is 
usually a very uniform ratio between the quantities of such 
foods consumed and the prevalence of the disease among 
the people. 
On the other hand all of those people who do not use 
the food products of the domestic cow are comparatively 
free from the disease. 
Prof. E. F. Brush, M. D., of Mount Vernon, N. Y., 
states as follows: “ This insidious and delusive disease is 
not the result of civilization as is supposed. Barbarous and 
semi-civilized races are afflicted as severely as many of the 
most advanced civilized races.'’ Neither geographical 
position nor climatic conditions are a factor in the distribu¬ 
tion of pulmonary phthisis. Every known part of the globe, 
with a few isolated areas excluded, is a habitat of the dis¬ 
ease. After several years of close study of the affection 
and consulting all accessible statistics and the habits of the 
people where the disease prevails, the only constanly asso 
ciated factor is found, in my opinion, in the inbred bovine 
species without any regard to the social position of a com¬ 
munity or its geographical habitation, terrestial or atmos¬ 
pheric condition. If a community is closely associated 
with inbred cattle, tuberculosis is prevalent. In the fifteenth 
annual report of the State Board of health of New York, is 
found the following: “Human tuberculosis is co-extensive 
with bovine tuberculosis. Broad generalization of our laws 
and knowledge gives a close parallelism between the num¬ 
bers of dairy cows and the prevalence of tuberculosis in the 
human race. Countries that have few or no cattle, or in 
which the herds are mainly kept in the open air, and are 
therefore largely protected from the disease show, as a 
rule, little tuberculosis in man.” 
Dr. G. A. Johnson, in substantiation of his argument, 
has found the conditions prevailing in different countries 
relative to this matter as follows: 
Europe —Cattle have existed and tuberculosis has pre¬ 
vailed in man for centuries. 
Australia —Tuberculosis was so rarely seen in early 
days as to lead to the idea that the climate was incompat- 
able with the disease, but with the advent of cattle raising con- 
