. Gonadectomy in relation to the secondary sexual characters of some domestic birds . G. Head of capon, showing infantile comb and wattles. Shanks of White Leghorn hen described on page 43, showing long spurs. Reproductive system of No. 1196; rb. right body with duct, rd, leading therefrom; lb, left body and duct, Id; o, oviduct (not clearly shown in the photograph); int, young duclis ( No. 169 front and No. 171 rear), siiowing condition soon after of capon showing the hypertrophied primary ^artially ovariotomized female, showing a few male fe

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. Gonadectomy in relation to the secondary sexual characters of some domestic birds . G. Head of capon, showing infantile comb and wattles. Shanks of White Leghorn hen described on page 43, showing long spurs. Reproductive system of No. 1196; rb. right body with duct, rd, leading therefrom; lb, left body and duct, Id; o, oviduct (not clearly shown in the photograph); int, young duclis ( No. 169 front and No. 171 rear), siiowing condition soon after of capon showing the hypertrophied primary ^artially ovariotomized female, showing a few male feathers among the female feathers. The male feathers visible in the illustration are the hackle feathers and the black feathers in the with a brood of chicks. GONADECTOMY IN RELATION TO THE SECONDARY SEXUAL CHARACTERS OF SOMEDOMESTIC BIRDS By H. D. GOODALEOf the Massachvsetis Agricultvral Experiment Station. Published by the Carnegie Institution of WashingtonWashington, 1916 tt rn •. ( 37 O , -L .R§ -^ ^^ » tc •A -> . • -,^g ^ o i; ^

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