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Profitable Poultry Keeping. 



THE " PERFECT " HATCHER.* 



In general construction this machine is similar to the " Cen- 

 tennial ; " that is, the water tank is above the eggs, and it is 

 warmed by a heater exterior to the machine, the Nursery is 

 below the egg-chamber, and the source of heat is gas or kero- 

 sene oil. The moisture pans are in contact with the return 

 water pipe under the eggs. The eggs are turned by placing 

 an empty tray inverted over the eggs and then inverting both 

 at once. The regulation of the heat is effected by means of a 

 thermostatic bar, which, by moving a lever, connects an elec- 

 trical (Leclanche) battery with a clock-work, which, when the 

 heat reaches the highest point, opens a ventilator and reduces 

 the flame of the lamp, and, when the lowest permitted tem- 

 perature is reached, closes the draft and turns up the flame. 

 Thus the heat constantly but slowly vacillates between the 

 two extremes as fixed — intermediate between the highest and 

 lowest admissible temperatures. A notable peculiarity of this 

 machine, and one which doubles its capacity after the first 

 ten days, is its double layers of eggs. The upper tray is 



► Made by Perfect Hatcher Co., Elmira, N. Y. 



