Gasoline-Heated Brooder-House. 



189 



once it feels and sees the source of heat and comfort, it will almost 

 invariably return to it. 



The importance of a high temperature in a brooder cannot be over 

 estimated. It is vitally important. Heat brought the young chick into 

 the world and lack of heat will take it out of the world. Without warmth 

 chickens do not sleep well. They huddle, i. e., they are compelled to 

 stand up to avoid being trampled to death. A chicken cannot sleep stand- 

 ing. Without sleep a chicken does not rest. Without rest a chicken 

 cannot grow. Sleep and rest are as important to a chicken as to a baby. 

 A large part of the slow growth and mortality with young chickens is 

 caused by lack of sleep, due to lack of heat. 



A higher heat can be maintained with a gasoline" 

 burner than is practicable with a kerosene burner. 

 The high, even heat of the gasoline vapor flame 

 insures a constant temperature of 100 degrees at all 

 times over a large area under the heater and a living 

 temperature of from 70 to 90 degrees under the 

 hover at its outer area. Figs. 63, 76 and 'j'j, 

 and Table i, page 220. 



2. An abundance 



of both warm and 

 cool pure air zvithout 

 injurious drafts. 



Pure air is even of 

 more vital importance 

 to poultry than it is 



Fig. 67. — The Dangler Furnace and Laboratory lamp toother domestic ani- 

 btirnerNo.i34- C V, control valve GC, generating ^^^^ because of the 

 cup. O, small opening tn valve seat. C, cone. 



warmer temperature 



of the fowl's body, which is normally 105 to 106 degrees. This high 

 body temperature is maintained by combustion of pure air with the food 

 nutrients contained in the blood. Without pure air perfect combustion is 

 impossible. Without perfect combustion the chick cannot be warmed 

 from within the body and therefore, will not be comfortable nor healthy 

 even in a warm brooder. The chick is a quick-growing, quick-breathing 

 animal, requiring rapid digestive and assimilative changes and therefore, 

 suffers seriously and quickly when closely confined and compelled to 

 breathe impure air. Leg weakness is almost certain to result from close 

 confinement and heavy feeding which usually is accompanied by a close 

 and more or less vitiated atmosphere. 



The Gasoline-Heated Colony Brooder-House provides for a con- 

 tinuous supply of pure air from outside tlic house. (Plate IV, Fig. 2.) 



