A COMMERCIAL POINT OF VIEW. 



45 



the middle of this room, will keep the temperature suffi- 

 ciently high during winter. 



Near the ridge of the roof ventilating frames should 

 be fixed, and near the floor one or two sliding doors 

 should be provided to allow of the admission of cold air. 



Chickens hatched in a dry atmosphere will never be 

 so strong and healthy as those hatched in a moist temper- 

 ature, as is evidenced by the difference in the appearance 

 of a brood hatched in a loft and one hatched in a field ; 

 and as a moist temperature is highly desirable it should 

 be provided for in artificial hatching. 



PORTABLE ARTIFICIAL HEN FOR HATCHING. 

 The apparatus represented by fig. 15, although only 



Fig. 15. Perspective Elevation of Artificial Hen for Hatching. 



