Care and Management of Dairy Cattle 169 
inward. Place a board edgewise along each side of the window, 
so that the air will not enter at the bottom and blow directly on 
the animals when the window is open. By leaving several of the 
windows open an inch or two at the top, fair ventilation will be 
Fria. 67. — Interior view of dairy barn, showing litter-carrier, cement floor, gutter, 
and arrangement of windows. 
provided without serious drafts. When this plan is employed, it 
is best to open the windows on the side of the barn away from the 
wind, and to regulate the size of the opening according to the 
severity of the weather. 
281. Floors are best made of cement. — While many objections 
have been raised to the use of cement, such as its cost, its being 
