478 SWINE IN AMERICA 



Because the bed of tlie pig on a cement floor becomes 

 (lamp and befouled so easily it is excellent to use over- 

 lays, which can be regularly and thoroughly cleaned, 

 especially during the winter season. Whatever its taults 

 may or may not be, the concrete floor permits of the 

 maintenance of better sanitary conditions than any other 

 yet used. 



PLAN AND LOCATION OF A MOVABLE SECOND FLOOR. 



"In the use of overlays," says Professor Shaw, "three 

 facts have been strikingly noticeable, viz. : First, swine 

 invariably use the overlays, by preference, sleeping on 

 the bare boards if there should be no straw on them; sec- 

 ond, of the three or four hundred hogs that have been 

 housed in our piggery, there are few instances where the 

 bedding on the overlays has been fouled by excreta, and 

 the tendency to this is much less if the overlays are in 

 the pen corners, where the pigs are not trampling over 

 them; third, we have not had a crippled hog in our pig- 

 gery since these devices have been in use. We dislike 



