596 
G. A. JOHNSON. 
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. 
The exceptions to the above are those communities where 
there are a greater or less number of transient tubercular pa¬ 
tients, or where a greater or less percentage of the inhabitants 
are tuberculous subjects, who have migrated to these special 
localities that they might receive such advantages as climatic 
conditions and altitude might afford. 
A short resume of the geographical distribution of the dis¬ 
ease will, I think, justify this statement of facts : 
Prof. E. F. Brush, M. D., of Mount Vernon, N. Y., in a 
paper read before the New York Academy of Medicine, April 
18, 1889, makes the following statement: u This insidious and 
delusive disease is not the result of civilization, as is generally 
supposed. Barbarous and seini-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 distribution of pulmonary phthisis. Every 
known part of the globe, with a few isolated areas excluded, is 
a habitat of the disease. 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 con¬ 
stantly associated factor is found, in my opinion, in the inbred 
bovine species, without any regard to the social position of a 
community or its geographical habitation, terrestrial 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, for the year 1895, on page 720, may be found the 
following : u Human tuberculosis is co-extensive with bovine 
tuberculosis. Broad generalization of our knowledge shows a 
