

Clean Milk 



the quantity of the air he gives them to 

 breathe. 



A supply of good air is usually assured if 

 there is an outlet overhead, because dead 

 air and the exhalation of the cattle, being 

 warmer than the fresh uninhaled air, will 

 rise and pass out, provided there is an outlet. 



The admission of fresh air is usually 

 accomplished by the doors, the windows, and 

 the loose construction of a barn, but when 

 this fails, as it so often does in the tenement 

 house style of barn, with its loft on loft, the 

 owner is in the hands of his architect and 

 must look to him for a system of ventilation. 



Good ventilation will compensate for 

 small air space, and the cubic dimensions of 

 a building do not of themselves imply good 

 or bad air. A small amount of air constantly 

 renewed is far better than a great quantity 

 of stale air. 



THE STALLS AND THE STANCHION. 



In building the stalls the same ideas apply 

 which governed the interior construction of 



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