326 BOAKD OF AGRICULTURE. [Jan. 



brain, and some in the lung. In 1881 a child about three years 

 old, died with, as it was called, tuberculous bronchitis ; and 

 in 1886, a boy, nine years old, who for three or four years had 

 been delicate, died with consumption, — " quick," as it was called. 

 So far as known, the family on both sides have never before had 

 any trouble of the kind, and the parents were both rugged and 

 healthy people, and so were the grandparents. 



The veterinary surgeon was laughed at when first called, 

 and gave the advice to kill the cow and stop using the milk. 

 Perhaps no one can say positively that using this milk was 

 the cause of the deaths — the primary cause ; but, by the 

 light of the investigations of the last ten years, it surely 

 points that way. You will observe that this occurred four 

 years before Koch's discovery. 



In the paper read before the American physicians by Dr. 

 Ernst, he discusses the question, and believes that it is not 

 necessary that the udder should show tubercular disease or 

 deposit to show the bacilli in the milk ; and he proves this 

 beyond a doubt in the many experiments along this line. 

 Koch asserts that the milk from cows affected with tuber- 

 culosis is dangerous only when the udder is involved, and 

 his great name has caused many to belteve his theory. 

 Galtier, in giving the result of certain experiments with milk 

 coming from tuberculous cows, says "the milk should be 

 considered dangerous which comes from any animal affected, 

 or suspected of being affected, with tuberculosis." Hirsch- 

 berger reports the results of an experimental research upon 

 the infectiousness of the milk of tuberculous cows, in which, 

 following out Bollinger's work, he attempts to settle, first, 

 whether the cases are rare in which tuberculous cows give an 

 infectious milk ; and, second, whether the milk is infectious 

 only in cows with general tuberculosis, or whether it is also 

 infectious when the disease is localized. He made the trials 

 of the infected milk by injection into the abdominal cavity 

 of guinea-pigs, with the usual precautions. His results were 

 as follows : — 



1. Milk was used five times from cows affected with a very high 

 degree of general tuberculosis in all tlie organs. 



2. Milk was used six times from cows with only a moderate 

 desrree of disease. 



