. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). \'X .^'>^ Fig. I.—A, Head of Barred Plymouth Rock male showing sexual vigor and mas- culine qualities. B, Head of Barred Plymouth Rock capon (unsexed male) showing characteristic effeminacy. Note sm,all comb and wattles and elongated beak. and vigor of offspring between fowls selected with reference to their constitutional vigor. Why we must breed for constitutional vigor The most important problem before poultrymen is
. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). \'X .^'>^ Fig. I.—A, Head of Barred Plymouth Rock male showing sexual vigor and mas- culine qualities. B, Head of Barred Plymouth Rock capon (unsexed male) showing characteristic effeminacy. Note sm,all comb and wattles and elongated beak. and vigor of offspring between fowls selected with reference to their constitutional vigor. Why we must breed for constitutional vigor The most important problem before poultrymen is to maintain and increase the constitutional vigor of the flock. This is because we are asking more of the modern hen, in proportion to her live weight, than. 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 Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?], 1900-1910. James B. Lyon, State printer)
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