FARM BUILDINGS 



inches above the floor; this extends from the 

 outside door across the rear of the pen and 

 half-way along the partition fence. The ob- 

 ject of this rail is to prevent the sows from ly- 

 ing on their pigs at farrowing time. At the 

 east end of the pen is a large feed-room con- 

 taining feed-bins, cookers, and scales on which 

 to weigh the pigs. The yards are 28 feet; and 

 those of the brood sows should open into a large 

 field (an acre for five sows with litters). 



In constructing the concrete floor, a porous 

 sub-base from 6 to 1 2 inches thick. — the thick- 

 ness depending somewhat on the severity of the 

 winter — should first be laid. The material 

 used may be either broken stone, gravel, or cin- 

 ders, well wet and tamped in layers, so that 

 when complete it will be even and firm, but por- 

 ous. Over this spread a layer of three-ply tar 

 paper with the joints well tarred, to prevent 

 the dampness from coming through. Then 

 cover with a 3 to 5 Inch coat of cement In the 

 proportion of 1:23^:5. In this cement the 

 posts and fender-supports are set before It 

 hardens. A final coat of mortar one inch thick, 

 35 



