BUILDINGS 301 
passage it is tightly boarded, but over the pens on each side of 
the passage the ceiling consists of 8-inech planks laid 2 inches 
apart, over which is kept a layer of straw at least. 12 inches thick. 
Fresh air is admitted through the windows, which are hinged 
at the bottom and open inwards at the top. On cach side of the 
window frame there is fittel a triangular piece of board with 
its edve against the wall and with the base of the triangle upward. 
When the window is open, these flanges prevent the air from 
escaping into the piggery except at the top, thus forcing the 
air to take an upward direction as it enters the building. The 
spaces between the planks of the ceiling are depended upon to 
permit. the escape of foul air and moisture from the building. 
Pens.—The larger pens are 11 x 12 feet, with beds 6 x 8 feet. 
The smaller pens are 8 x 12 feet, with beds 5 ft. 6 in. x 6@ ft. 
Around the beds is a cement curb rising 6 inches above the 
level of the floor, and the space inside the curb is covered 
with plank. 
The feed room is 12 x 16 feet, and the partitions run to the 
ceiling. Across the passage from the feed room are two pens 
8 x 12 feet, and between these pens and the rest of the building 
are partitions which run to the ceiling. In the passage are 
double doors which may be closed, thus shutting off the two 
small pens entirely from the rest of the building. These two 
pens are intended for farrowing pens, especially in cold weather. 
If the weather is very severe, a fire can be built in the feed room, 
and by leaving the feed room door open into the passage, the 
temperature of the two pens can be considerably modified. 
The remaining smaJ] pens are intended for sows with their 
litters, and the voung pigs with their mothers may he re- 
moved from the farrowing pens into the other part of the 
building as soon as the pigs are strong enough to stand the 
lower temperature. 
