The Cow Barn 



ful and necessary, and can readily be made 

 to accomplish its intended purpose, which is 

 to facilitate the separation of urine and its 

 collection, to become available as a fer- 

 tilizer. 



In building the urine gutter suggestion is 

 made of laying the floor after the plan used 

 for city streets, which slope from the center 

 toward the sidewalks, where the curb forms 

 a gutter, which is pitched lengthwise. As a 

 result, the rain first flows toward the gutter 

 and then follows it to the catch basin at the 

 intersection of the two thoroughfares. In a 

 similar way the urine could be carried off. 

 With the floor sloping from the rear of the 

 stalls, the urine will naturally flow toward 

 the base of the slope, where it runs into the 

 gutter and follows the pitch of this to a 

 trap or catch basin connecting with a 

 cistern. 



THE SIDINGS LIGHT IN A BARN AND 

 TUBERCULOSIS. 



The interior surface of the side walls 



45 



