Kinds of Side Walls 99 



lively cheap material and is a poor conductor 

 of heat. The side walls are constructed in va- 

 rious ways. For convenience of discussion the 

 various kinds of walls may be placed under two 

 heads: solid walls and hollow walls. In cold 

 countries the hollow walls, or those with a dead 

 air space, are to be preferred, because of then- 

 greater warmth and freedom from moisture. In 

 moderate or warm climates solid walls will un- 

 doubtedly answer every purpose. 



For latitudes south of New York, solid walls, 

 constructed of one or two thicknesses of inch 

 boards, will prove quite satisfactory, particularly 

 in the hands of the skilled poultryman. The 

 amateur will undoubtedly prefer the hollow 

 walls, as imperfect appliances and buildings are 

 greater hindrances to him than they would be to 

 the skilled and experienced man. Buildings with 

 hollow side walls are cooler in summer, warmer in 

 winter, and are not so likely to be covered with 

 frost in severe weather as solid walls, particularly 

 if the solid wall consists of but one or two thick- 

 nesses of boards. If the side walls and roof 

 become more or less frosted in severe weather, 

 dampness results whenever the temperature mod- 

 erates sufficiently to melt the frost. A cheap and 

 efficient wall for the sides and ends of the build- 

 ing may be constructed of two thicknesses of rough 

 inch lumber. Both thicknesses of this siding 



