There has been a great deal of discussion of late on the relationship between human and animal tuberculosis. There is a wide difference of opinion as to the danger of human beings contracting the disease from animals. That animal and human tuberculosis are one and the same disease no one denies. It is probable, however, that the tubercle bacillus which has been accustomed to grow on animal tissue will not readily grow on human tissue, and that the bacillus which has been accustomed to grow on human tissue will not readily grow on animal tissue. The preponderating evidence seems to be in favor of the view that human beings practically never get tuberculosis from animals. Until the subject is cleared up, however, one should not drink the milk of tuberculous cows in which the disease is far advanced and particularly in which the udder is involved. Whatever little danger there may be of getting tuberculosis from the meat of tuberculous animals is obviated by cooking. The danger which may exist of taking the disease through milk can also be obviated by pasteurizing the milk.