Tuberculosis. 523 



furnish more than mere circumstantial evidence. They are cor- 

 roborated and strengthened by the very uniform diffusion of 

 tuberculosis in man and stalled cattle in practically all civilized 

 countries. Of the closer connection in individual cases one or 

 two instances may here be added as drawn from personal observa- 

 tion : 



1. In one case a family cow and the owner's wife had both ad- 

 vanced tuberculosis. The lady consumed a good deal of the 

 cow's milk, but when she gave up its use she felt decidedly 

 better. 



2. The owner of a thoroughbred herd of sixty head had suf- 

 fered for years from consumption, and attributed the poor condi- 

 tion of the animals to lack of care since he had been laid aside. 

 Without the tuberculin test, I diagnosed tuberculosis in fifty-nine 

 of the animals. 



3. In a second thorougbred herd there never lacked one or 

 two cases of advanced tuberculosis, two of the family suffered, 

 and the eldest son, who was fond of milk and vegetable food, died 

 of pulmonary tuberculosis. 



4. A dairy of common cows had seventeen out of twenty-six 

 destroyed for tuberculosis, and the farmer's wife, father-in-law, 

 and two brothers-in-law had shortly before died of consumption. 

 The wife felt ill in the close house air, and with her father occu- 

 pied herself much about the cattle. 



5. A veterinary professor, who was meat inspector of the city 

 abattoir, died a few years ago of tubei;culosis, which he handled 

 so constantly in his daily duties. 



6. While printing this second edition, I have before me a 

 veterinarian, a strong, splendid vigorous man who has contracted 

 tuberculosis in the lungs, just after making necropsies of tuber- 

 culous cows. 



Stalker and Niles report that 5 persons, 20 to 30 years of age, 

 of healthy ancestry, died of tuberculosis within two years, on a 

 farm where 17 tuberculous cattle were found, and others had 

 died in previous years, (Bull. la. Agr. Exp. Stat., 29). 



I^eonhardt reports the death from tuberculosis, abdominal and 

 meningeal, of two children, fed on the milk of a tuberculous cow, 

 (Rep. N. H. Bd. of Health, 1892). 



Sontag reports the death by tuberculosis of a six months old 



