TiiF. Principles of Brooding. 



319 



Fig. 98. — Illustrating the nietliod of 

 supporting the burner box beneath 

 the house. A, burner box; B, wire 

 support with staple at top; C,2" x 4" 

 floor joist', D, rear runner 



a hook and eye, or may be entirely removed while cleaning the floor 

 of the house. The front is supported by pieces of broom-stick 

 serving as legs at each corner. It is enclosed by a double curtain of 

 table oil-cloth, unfinished surfaces 

 together, reaching to within one inch 

 of the floor. This is made into a 

 fringe by a series of vertical slits four 

 inches apart, extending upward six 

 inches. The slits in the outer thick- 

 ness of the curtain are made to break 

 joints with those of the inner. Table 

 oil-cloth is used in place of felt or 

 woven cloth because the chicks eat 

 the felt and are likely to become en- 

 tangled in the ravellings from the 

 woven cloth. It is also easier to keep 

 oil-cloth clean. A f'hole is bored four 

 and one-half inches from the front of 

 the hover and the thermometer in- 

 serted so that the bulb is within three 

 inches of the floor. A board of asbestos 3 feet square, nailed to the 

 lower side of the hover directly above the radiator insrres against 

 overheating the hover. 



The gasoline tank is put in place by cutting a circular opening eight 

 and one-eighth inches in diameter through the rear gable of the house. 

 The inner end of the tank is supported by a strand of wire passed once 



around and attached to the ridge- 

 board. It is secured at the rear 

 end by nailing the square galvan- 

 ized iron collar to the outside of 

 the house. The iron piping is now 

 fitted together and the burner con- 

 nected. All threads are well coated 

 with soft soap before screwing 

 together. When the burner is in 

 place it should be so located as to 

 be directly underneath the center 

 of the stem. 

 The runners, as shown in Fig. 95, are 12 inches high and are placed 

 in the front and rear of the house. Runners 6 inches high have been 

 tried with satisfactory results. The house may then be raised for sum- 



Fig. 99. — The hover dimensions 



