262 



AN EGG FARM. 



been sat upon by a hen. He says : ' ' The two flue places 

 do not open into the hatching room but into one adjoin- 

 ing, where the keeper sits and the coal is kept. By this 

 means the eggs are free from smoke and dust, by which 

 they might otherwise be greatly injured. The two 

 rooms have a door communication, that the keeper may 

 every now and then visit the eggs, and see if they are in 

 the proper degree of heat." 



Y 



FIG. 144. TILT BOX PARALLEL SYSTEM. 



This experiment we shall refer to later as the type of 

 what will eventually prove the most successful mode of 

 artificial hatching on a large scale. The patent incuba- 

 tors such as are now on sale, or modifications thereof, 

 from the size of a- cook stove to a billiard table, with reg- 

 ulators attached, will always be of use for amateurs, 

 families or ordinary raisers on a small scale, but the 

 expense of the machines and the care involved in run- 

 ning them are so great where thousands of chicks are 



