2l8 



Bulletin 246. 



2. Fasten firmly to the house, the pipe leading from the supply tank 

 to the burner so that the burner shall remain rigidly in place under 

 the center of the stem leading to the heater drum. Otherwise the heat 

 will be lost. 



3. Do not leave the hover raised without first extinguishing the 

 flame. The wind is likely to blow down the stem of the heater and put 

 out the flame, which would allow the gasoline to escape. (Fig. 63.) 



Fic. 81. — A syiiiposiiiiii of some of the heaters zchich zi'cre made at Cornell Uni- 

 versiiy and discarded in an effort to invent one ivhich zvotild be safe, of reason- 

 able cost, durable, economical of fuel and zvhich would sufyply a large amount 

 of heat. Some of the difficulties encountered, were, first — to provide a fire proof 

 burner box that zvould furnish sufficient fresh air to the burner and at the same 

 time zvould not be affected by heavy zvinds. Second to secure a continued sup- 

 ply of pure, moderately warm but not. super-heated air under the hover frov 

 outside the house. Third— to hold the hot air within the heater drum long 

 enough to supply radiated heat from above dozen upon the chickens. 



4. Never ignite the burner while there is gasoline or gasoline vapor 

 free inside the burner box. If gasoline has escaped, wipe out the burner 

 box thoroughly and allow a little time to elapse before igniting in order 



