DISEASES OF ANIMALS TRANSMISSIBLE TO MAN. 
173 
1677, 12 students at a Uepez school died of eating affected meat. 
It has been proven beyond a doubt that animals, especially 
cows suffering from tuberculosis, are dangerous to human life. 
Stamping out the disease amongst animals would materially 
lessen the mortality from consumption amongst the human race. 
The clinical diagnosis of tuberculosis amongst cattle is not 
to be relied upon. But there are methods of diagnosticating 
this disease amongst cattle which are absolutely positive. 
Symptoms which should be looked upon with suspicion are a 
cough, which is of a short, deep character ; it is more frequent in 
the morning when the cow first begins to move about. Moving 
and drinking bring on an attack of coughing.; if the disease is 
far advanced the cough is painful, spasmodic and dry ; there is 
hardly any discharge. When a large part of the lung becomes 
involved the animal wheezes during inspiration. Upon percus¬ 
sion there is a dull note over the region of large tubercular de- 
posits and tympanitic sound over cavities wasting away, short¬ 
ness of breath, anorexia, hide bound, decrease in milk secretion, 
remittent or intermittent fever. If the mammary gland is af¬ 
fected (and perhaps that is the form most dangerous to man) it 
will be swollen, hard and nodular ; with any or all of these symp¬ 
toms we must look upon the case with suspicion. 
The test for tuberculosis which is most commonlv used is 
known as the tuberculin test. Anti-tubercular serum may be 
considered as a glycerine extract of the tubercular germ. It 
contains no living germs of tuberculosis and therefore does not 
communicate the disease to healthy animals. The milk of a 
cow is unaffected by its use, and it does not interfere with ges¬ 
tation, even if the cow is ready to calve. It is manufactured 
upon a large scale by some of the manufacturing chemists, as are 
also other serums, diphtheria, tetanus anti-toxin, streptococcus, 
mallein, etc. The method of using the tuberculin test is first of 
all to get the average temperature of animal to be tested, which 
can be done by taking the temperature per rectum about every 
four hours for twenty-four hours before applying the serum. 
Then inject the serum subcutaneously at any convenient point 
