268 



THE LIFE OF A BIRD, 



with glass, or India-rubber cloth. The eggs are 

 arranged in frames, and are applied to this under 



The Hydro-Incubator. 

 1. Thermometer and Stove. 2. Egg-trays. 3. Receptacle for Young. 



4. Artificial Mother. 



5. Feeding Tray. 



surface in such a manner, that, just as in nature, 

 the first and chief application of heat is to the 

 vital spot in the egg. At the lower part of the 

 chest, at each side, the young chickens find a warm 

 roosting place, by nestling under the warm water 

 pipes which return the water in its circulation to 

 the reservoir again. 



The process of incubation carried on in these 



