FARM STRUCTURES 



421 



The lighting of this type of house is sometimes augmented 

 by building a monitor above the alley-way and supplying two 

 additional rows of windows. This construction adds con- 



Fig. 268. Cross section of a hog house with gable roof. 



siderably to the -cost. A type of house which is being used 

 and developed in Iowa is one with a skylight running through- 

 out the entire length of the building. This system of lighting 



Greerv- house 

 Window. 



Fig. 269. Cross section of a hog house with a sky-light in the roof. 

 Direct sunlight strikes all parts of the floor during the day. 



