422 
M. H. REYNOLDS. 
at all seasons of the year. Not only that, but it is now quite 
apparent that young’ cattle may be immunized, and be safel\ 
shipped into the Southern States. This means the possibility 
of improving the southern cattle, and you are doubtless aware 
of the immense cattle interests of the South, particularl) of 
Texas and Southwestern Louisiana. 
Bovine Tuberculosis ,.—The problem of tuberculosis in the 
human family and among domestic animals is perhaps the 
largest, and it may prove the most difficult problem which med¬ 
ical men have ever been compelled to face. Dubard’s discovery 
of tuberculosis in fish has been such a revelation that it is un¬ 
safe to even speculate concerning the limitations of this disease. 
Here we have a bacillus, varieties of which can exist in different 
animal bodies through a range of temperature of from 50 degrees 
F. in carp to 135 degrees F. in birds. Are there varieties of the 
bacillus of tuberculosis which are capable of altering from one 
to the other? Competent research work seems to indicate that 
this may be the case. If this bacillus can gradually adapt itself 
so as to thrive in a variety of animal bodies, whose normal tem¬ 
peratures vary from 50 degrees F. to 130° or over, then the pos¬ 
sibilities as to distribution and saprophytic existence of this mi¬ 
croorganism are almost bewildering. 
Sanitarians in the field of veterinary medicine have taken 
hold of the problem, large as it is, and considerable has already 
been accomplished. But a few years have passed since we had 
the first positive information as to the specific nature of the 
disease. We now have a diagnostic test for the presence of this 
disease which is as nearly infallible as any method of diagnosis 
in the whole realm of medicine. It gives us positive evidence 
as to the presence of the disease, even when the lesions are very 
recent or slight in extent 5 and so far as known the enois that 
may be charged to tuberculin are nearly or quite all in cases 
that can be diagnosed on clinical evidence without the aid of 
tuberculin. Widespread interest in bovine tuberculosis has 
been aroused. Cattle breeders and dairymen are becoming in¬ 
formed as to the nature and extent of the disease. The views of 
