Gasoline-Heated Brooder-House. 



191 



When the air enters the hover it is warm but not super-heated. The 

 chick, therefore, is not kept warm by breathing hot air but is warmed 

 by radiated heat 'from the drum. The air space within the house as well 

 as under the hover, is large. The house contains 240 cu. ft. of air space, 

 1.2 cu. ft. per chicken. Moreover the provision for constant change of 

 air by means of the cloth window or the opening in the front or the rear 

 of the house, or both, as may be preferred, insures fresh air at all times. 

 Most outdoor brooders contain about 28 cu. ft. air space which allows 







Jtt/t- 7=^' 



Fig. 68. — Cross section drawing of burner. 



.28 CU. ft. of air space per chick with 100 chicks a brooder, or .56 cu. ft. 

 with 50 chicks, which necessitates rapid change of air, a condition hard 

 to accomplish without draughts. 



3. Opportunity to get azuay from the heat and to exercise in cool air. 

 It is not sufficient simply to supply heat and pure warm air in a 

 brooder. It is quite as important that chickens have an opportunity to 

 enjoy the invigorating effect of pure, cold air. Chickens that are not 

 given this opportunity are likely to become languid and weak from the 

 hot house treatment. The brooding system here described provides for 

 three different areas of temperature within the house; namely, a high 



