i86 



Profitable Poultry Keeping. 



dition, this cap remains in position, and the hot air has tc go 

 the circuit already named ; but, when the heat rises above 

 104 degrees, the capsule expands, the lever is acted upon, and 

 the cap is lifted from off the chimney, so that the hot air 

 escapes there, and the machine soon cools down. This cap- 

 sule is wonderfully susceptible, and the incubator is found to 

 work admirably. The usual arrangements are made in it for 

 ventilation, and moisture, without which no machine could 

 succeed. 



AMERICAN INCUBATORS. 



THE "NEW CENTENNIAL" rNCUBATOR, 



A— Thumb piece, or crank, on roller of 



turning-tray. 

 B— Boiler. 

 C— Connecting rod from outside lever of 



rock-shaft to lamp. 

 D— Outer door. 



i?— Moisture pan under egg tray. 

 G— Egg tray. . 

 H— Ventilator to nursery. 

 /—Lamp lever. 



K— Outside lever of rock-shaft. 

 L — Lamp. 



N— Door of nursery. 

 P— Rods or wires of adjustable egg tray. 

 #— Springs that hold lamp in place. 

 T 7 — Moisture trough. 

 V— Ventilator flues from egg chamber. 

 Z— Inner door with glass window (shown 

 open). 



There are three self-regulating incubators prominently 

 before the people of this country, each practically good, and 

 neither characterized especially by the modesty of its claims, 



