COOPS AND BUILDINGS FOR POULTRY 



III 



exclude cold and retain the heat thrown off by the occupants. Arti- 

 ficial heating was often tried and usually discarded after a short 

 trial as of no advantage, though in a trip through central New York 

 some years ago the author found many poultry houses in which 

 large stoves were used and considered an a.dvantage. In general, 



Ftc. 1 29. Tight house with smal! windows; ventilation through doors 



Fig. 130. Tight house with large windows always kept slightly open at 

 the top for ventilation 



it was thought better to build houses tight and warm. To accom- . 

 plish this, various methods were used. The cheapest construction 

 supposed to answer the purpose was made by covering the frame 

 of the house with boards, and these with two thicknesses of build- 

 ing paper, the outer one weatherproof. For more effective protection 



