. Carnegie Institution of Washington publication. Selection and Cross-breeding in Relation to the Inheritance of Coat-pigments and Coat-patterns in Rats and Guinea-pigs BY HANSFORD MAcCURDY AND W. E. CASTLE. WASHINGTON, D. C. ! PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON MAY, 1907. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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