314 BUILDINGS, SANITATION, AND DISEASES 
high in front and three feet high at the rear. (Figs. 80 and 81.) 
The following lumber is necessary to construct the pen: 
Six pieces 2” x 4” X 16’, 
Five pieces 2” X 4” X12’. 
Two pieces 2” X 4” & 14’ for frame. 
Three pieces 1” X 12” X 16’, rough, for floor. 
Eleven pieces 1” X 12” x 12’ (dressed on one side) for sides and ends. 
Five pieces 1’ X 12” X 16’ (dressed on one side) for roof. 
Four pieces 0. G, battens 16’, and eleven pieces O. G. battens 12’ long for 
roof and sides. 
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Courtesy of National Manufacturing Company, Des Moines, Iowa. 
Fie. 82.—A type of galvanized metal portable pen. In hot weather the lower half of 
the side can be raised as shown in the illustration, increasing the shade and admitting fresh 
air. In cold weather the side can be lowered to close the opening. 
If a shingled roof is desired, the following material is neces- 
sary for roofing: 
One piece 1” X 12” X 14’. 
Five pieces 1’ X 6” X 14’ (dressed on one side). 
Three bunches of shingles. (Figs. $2 and 83.) 
Portable Cold-weather Farrowing Pen.—The farrowing 
pen shown in the illustrations (Figs. 84, 85) is the one re- 
ferred to when discussing the management of the sow. The 
pen is S feet syuare and five feet from the ground to the eaves. 
The hase, the corner posts, and the two plates are made of 
4” by 4” seantling, and the remainder of the frame is made 
