The Coic Bar)) 



that, can be done is to remind the farmer of 

 the extreme danger and suggest to him that 

 if not because of the possible danger of com- 

 municating tuberculosis to the persons who 

 drink his milk, then because of the welfare 

 of his cows, he adopt the simple measures of 

 prevention. Foremost among these is light, 

 and one would like to see cow barns with a 

 continuous row of windows in the side walls. 

 Some men offer as a compromise a window 

 to each cow, which is a vast improvement 

 over ordinary conditions. The Monitor sky- 

 light advocated for a barn gives much light, 

 and in some barns glass trapdoors have 

 been laid in the slope of the roof. 



VENTILATION. 



After light, the next question concerning 

 a barn is tlie air, which is furnished by Na- 

 ture without stint and of unquestioned 

 purity when the cows are in the fields. 

 When the farmer takes his cows indoors he 

 cannot ignore, unless to their detriment and 

 the depletion of his income, the quality and 



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