632 
JOHN J. REPP. 
cent, of which showed lesions of tuberculosis evidently pro¬ 
duced by the ingestion of milk containing tubercle bacilli. 
Since then this author has made numerous similar observa¬ 
tions. 3 6 
Law 37 fed 3 calves of healthy parents on the milk of 3 
tuberculous cows with apparently sound udders with the result 
of producing tuberculosis in all 3 calves, 100 per cent. 
Ernst 38 fed 21 healthy calves on milk of tuberculous cows 
with healthy udders and 8, 38 per cent., of them became tuber¬ 
culous. 
Ernst 3 9 fed 48 rabbits from one to three months on the milk 
of healthy udders, and 2, 4.1 per cent., were infected with 
tuberculosis. 
Freudenreich 40 examined 28 samples of mixed milk, and of 
this number found 4 which proved to be virulent when inocu¬ 
lated into guinea-pigs. 
Bang 41 says : u In Denmark, the swine are almost always 
fed with skim milk, buttermilk, and whey, in addition to grain, 
and formerly it was noticed that when these milk foods were 
given raw the swine almost always suffered from tuberculosis, 
where this disease was prevalent among cows. Since attention 
has been directed to this danger tuberculosis in swine has 
greatly diminished in my country.” 
Hills and Rich 42 record the observation made by one of 
them that 5 swine, born of apparently healthy parents, and fed 
on skim milk from a creamery partly supplied by tuberculous 
cows, were found tuberculous on autopsy. Also that many of 
the pigs fed on the milk of a herd of 91 cattle, 78 of which 
were tuberculous, were found tuberculous 011 post-mortem ex¬ 
amination. 
Russell 43 fed 2 pigs, beginning at six weeks of age, from 
August 23 to November 10, on separator slime received from 
the college creamery. None of them became tuberculous. 
Bang 44 says : “ In Denmark milk is often given to young or 
to sick horses, and in those parts of the country where this cus¬ 
tom is frequent, tuberculosis is not rare in the horse.” 
