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The Essentials of Poultry Raising 



the chamber is occupied by pipes. These pipes are not separated 

 from the e.gg chamber. 

 •The eggs occupy the middle chamber. 





AN OIL-BURNING INCUBATOR. 



Fig. 31. 1, body; 2, heat diffusion diapliragh lowered; 3, egg tray; 

 4, thermometer; S, nursery tray partly drawn out; 6, lamp; 7, heating 

 drum from which air passes into incubator ; 8, glass door ; 9, damper bar ; 

 10, damper disc; 11, balance weight; 12, candler; this metal chimney is 

 used with the incubator lamp in a dark room to candle eggs. 



The lower chamber is provided with a canvas-covered tray, 

 and is called a nursery chamber. A glass door is placed in 

 front, so that the chicks, as fast as they are hatched, are 



