CHAPTER V 



MILK-BOENE DISEASES 



It is a commonplace of pathological science that 

 milk often plays an important part in the dissemina- 

 tion of many of the diseases which assail the human 

 race. Not only are many of the diarrhceal diseases 

 which are responsible for such an appalling number 

 of infant deaths each year due, in many instances, 

 to impurities in the milk which set up serious dis- 

 turbances in the digestive tract, but there is also 

 specific infection from beast to man as well as from 

 man to man through the medium of the milk of the 

 beast. Epidemics of scarlet fever, diphtheria, measles, 

 and typhoid have been traced directly to the milk 

 supply, and it is now very generally believed that 

 tuberculosis is spread by the same means. 



It is sixty-five years now since Robert M. Hartley, 

 one of the founders of the New York Association for 

 Improving the Condition 'of the Poor, wrote The 

 Cow and the Dairy, dealing with the relation of impure 

 and infected milk" to the excessive infantile death-rate, 

 a book which became famous as the text-book of 



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