196 Farm Poultry 



structed in excavations which were sufficiently 

 deep to permit of most of the room being below 

 the surface of the ground. See Figs. 61 and 62. 

 This method will undoubtedly secure an even 

 temperature, but the room is likely to be venti- 

 lated with difficulty unless special provisions are 

 made. During the warm days of spring and early 



Fig. 61. Au incubator house Rhode Island Agricultural 

 Experiment Station. 



summer it is somewhat difficult to ventilate a 

 basement without causing drafts, which would 

 interfere with the lamps and prevent them from 

 burning steadily. An incubator room should be 

 comparatively free from drafts. 



Care of incubators. Incubators should receive 

 the same care and careful adjustment that are 

 given to other delicate machines. The accurate 

 working of the incubator will depend very largely 



