I08 POULTRY APPLIANCES AND HANDICRAFT 



valves and tank. Anybody can set up a heater, and 

 it is almost as easy to operate as a coal stove. Steam 

 heat has some advantages for a large plant carefully 

 planned with all the buildings supplied from a large 

 boiler. But for the great majority of establishments 

 a hot water system is to be preferred. 



Houses for layers are seldom heated, owing to 

 the impression that the stock would become feeble 

 and cold or roup increase. But the tests at the Utah 



C^ 



FIG 105 ; HEATER AND VENTILATOR 



experiment farm have attracted much attention as 

 tending to show that a moderate amount of heat may 

 be profitable for mature fowls, decidedly increasing 

 the egg yield. On estates where a greenhouse or 

 brooder plant is located, there would be little trouble 

 or expense in turning on a little heat in the henhouse 

 during very cold da)s and nights. 



Among the many plans in use for warming the 

 poultry house, the heater illustrated in Figure 105 



