. Commercial poultry raising; a thoroughly practical and complete reference work for the amateur, fancier or general farmer, especially adapted to the commercial poultryman. Poultry. 170 COMMERCIAL POULTRY RAISING trigger. When the hen enters, she pushes against the door with her back; this disengages the trigger, allowing the door to close after her, and by the same operation locks the door from within, —for the trigger has simultaneously assumed a horizontal posi-. Treadle set with door open to admit Please note that these images are extracted from scanned page images that may have bee
. Commercial poultry raising; a thoroughly practical and complete reference work for the amateur, fancier or general farmer, especially adapted to the commercial poultryman. Poultry. 170 COMMERCIAL POULTRY RAISING trigger. When the hen enters, she pushes against the door with her back; this disengages the trigger, allowing the door to close after her, and by the same operation locks the door from within, —for the trigger has simultaneously assumed a horizontal posi-. Treadle set with door open to admit 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-. Philadelphia, D. McKay
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectpoultry
