80 PRINCIPLES AND PRACTICE OF MILK HYGIENE 



with the frequency of the disease in children receiving 

 cow's milk was made by Sobotta. Of 80 exclusively 

 breast-fed children, 17.5 per cent, were infected with 

 tuberculosis ; of 57 children receiving cow's milk in addi- 

 tion to mother's milk, 35.1 per cent, were infected, and 

 of 30 fed exclusively on cow's milk 41 per cent, became 

 tuberculous. 8 Mitchell 9 examined 72 cases of cervical 

 gland tuberculosis in the Children's Hospital in Edin- 

 burgh and found tubercle bacilli of the bovine type in 

 65, or 90 per cent. These children came from districts 

 in which the cattle are extensively infected with tuber- 

 culosis and most of them had been nourished on cow's 

 milk. Of 70 cases of tuberculosis of the bones and joints 

 in children examined by Fraser 9 in Edinburgh, 41, or 

 60 per cent., were due to bacilli of the bovine type and in 

 the greater number of cases the history indicated that the 

 infection was introduced by cow's milk. In 261 cases of 

 bone and joint disease examined by Eastwood and 

 Griffith, 10 bacilli of the bovine type were found in 55, or 

 21.1 per cent. Of these latter, 29 per cent, were from 

 patients under 10 years of age and 9.4 from patients 

 over that age. Seventeen cases of genito-urinary dis- 

 eases were examined. Bacilli of the bovine type were 

 found in three cases of kidney disease in persons 25, 19 

 and 20 years old, respectively. Twelve and one-half per 

 cent, of the fatal cases of tuberculosis in children under 

 5 years old studied by Park and Krumweide n were 



8 Cited by Rievel, Milchkunde, p. 110. 



9 Cited by Ostertag, Zeitschr. fur Fleisch u. Milchhygiene, 

 p. 69, No. 3, vol. 24; p. 118, No. 5. vol. 24. 



10 Journal of Hygiene, pp. 257-309, 310-314, No. 2, vol. 15. 



11 Jour. Med. Research, pp. 109-114, vol. 27. 



