. Commercial poultry raising;. Poultry. 260 COMMERCIAL POULTRY RAISING with cracked shells hatch, providing the cracks were sealed with adhesive plaster, but as a rule it does not pay to bother with them. Cracks mean excessive evaporation or ruptured blood- Front view. 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