HELPS IN HATCHING SEASON 67 



on, this will make two thicknesses, with half an inch 

 air space, and will prevent overheating below the lamp 

 pipes. Use stout zinc for covering the bottom, with a 

 hole for the bolt in the center of it. Nail it on with 

 double rows of lath nails, about an inch apart, and it 

 will be air tight. Put the bolt in and tighten up the 

 thumbscrew. 



The drawer, Figure 72, b, is five inches deep in 

 front, four feet nine inches long, and two feet eleven 

 and one-half wide. After saving a space in front eight 

 inches wide for sawdust, take a piece of heavy, coarse 

 muslin or tow and stretch tightly over the bottom and 

 fasten with tacks. Nail a board nine inches wide under 

 the front space for sawdust, but cover the other parts 

 with slats one inch square, nailing them on crosswise 

 through the tow, and place them about an inch apart. 



A very convenient and complete egg turner may 

 be made by making a frame with beveled cross-slats. 

 This should be three inches shorter than the inside 

 measurement of the drawer, and just wide enough to 

 slide nicely. The sides of the frame should be seven- 

 eighths by three-eighths of an inch ; the ends, seven- 

 eighths square. The slats are seven-eighths of an inch 

 high and one-half an inch across the bottom, and are 

 one and seven-eighths inches apart at the top. It is 

 well to put the slats two inches apart for extra large 

 eggs or duck or turkey eggs. By moving or sliding 

 this frame back and forth, the eggs turn very nicely. 



The ventilator box, with the bottom of the incu- 

 bator, is represented standing upright in Figure 73. 

 The box proper is three by four feet, the same as the 

 heater, but eight inches high. By noticing the draw- 

 ing, it will be perceived that the bottom of the incu- 

 bator is eight inches larger every way than the 

 ventilator box, and that the same matched boards 

 answer for both. The twelve half-inch holes are for 



