BUILDINGS 307 
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Fig. 75. 
Fic. 73.—Ground plan of Maryland piggery. Note gates, which, when swung back, 
close the pigs in the beds and allow a cart to be driven right through the pen for cleaning out. 
Fic. 74.—Cross-section of Maryland piggery. Note difference in floor lévels.. The 
feed bin is 2 feet wide at the bottom, 2 feet 6 inches at widest part, and 2 feet 10 inches 
high next to passage. . E ‘ x 
Fic. 75.—Front elevation of Maryland piggery. It is boarded to a height of 5 feet from 
the ground, and the remaining space left open. 
