Barn Construction. 



125 



some way made water-tight. We can no longer 

 afford to waste the most valuable half of barn 

 manure. This drop or gutter may drain into the 

 liquid-manure cistern, have a hose turned into it, 

 and be thoroughly cleaned after emptying. The 

 gutter is easily made of concrete ; first the bottom in 

 the usual way; the sides are made by filling in a 

 space between two planks set on edge as shown 

 below, well supported to keep from springing. 



The ditch is dug two or three inches wider than 

 this space between the sides of the ditch and the 

 upright plank (which plank is only used as a mold to 



be taken away when the concrete has set). The 

 floor upon which the cows stand is also cemented. 

 This is a little more expensive than plank, but, once 

 in, it should last indefinitely. Depressions for a cast- 

 iron grating to fit in level or flush with the plat- 

 form the cows stand upon and the driveway behind 

 them, should be provided. 



