. Commercial poultry raising;. Poultry. 308 COMMERCIAL POULTRY RAISING least three sides, and so arranged as to flood the interior with sun- light. Except in very warm weather, these windows should not be relied upon for ventilation, for it is almost impossible to venti- late in this manner without creating drafts. It is the draft, not fresh air, that causes trouble. Ventilation.—The following system of ventilation has given excellent results, and it may be installed in any house at a moder-. (Courtesy Prairie Stale Incubator Co.) Fig. 202.—Filling the coal hopper of a brooder stove. ate cost:
. Commercial poultry raising;. Poultry. 308 COMMERCIAL POULTRY RAISING least three sides, and so arranged as to flood the interior with sun- light. Except in very warm weather, these windows should not be relied upon for ventilation, for it is almost impossible to venti- late in this manner without creating drafts. It is the draft, not fresh air, that causes trouble. Ventilation.—The following system of ventilation has given excellent results, and it may be installed in any house at a moder-. (Courtesy Prairie Stale Incubator Co.) Fig. 202.—Filling the coal hopper of a brooder stove. ate cost: In the four corners of the brooder house, and about one foot above the floor line, cut circular openings in the walls about six inches in diameter, and with ordinary stove-pipe and elbows construct an S-shape ventilator, pointing downward on the outside and upward on the inside. Over the inside opening place a screen to prevent chicks from flying into it, also a damper to control the intake of air. In the center of the roof install an exhaust vent or cupola having an area twice as great as the com-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Roberts, Howard Armstrong, 1885- [from old catalog]. Philadelphia, D. McKay
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1920
