The Journal of experimental zoology . 45. LiLLiE, F. R. 1908 Development of the chick. Holt & Co., N. Y. Pearl and Curtis 1909 A case of incomplete hermaphroditism. Biol. Bull.,vol. 17. p. 271. 30 ALICE M. BORING AND RAYMOND PEARL Poll, H. 1909 Zur Lehre von den sekundaren sexual Charakteren. Ges. Nat. Freund 6, Jahrgang 09, p. 331. Seligmann and Shattock 1914 Relation between seasonal assumption ofeclipse plumage in the mallard and function of testicle. Soc, London. Shattock and Seligmann 1906 An example of true hermaphroditism in do-mestic fowl, with remarks on the phe
The Journal of experimental zoology . 45. LiLLiE, F. R. 1908 Development of the chick. Holt & Co., N. Y. Pearl and Curtis 1909 A case of incomplete hermaphroditism. Biol. Bull.,vol. 17. p. 271. 30 ALICE M. BORING AND RAYMOND PEARL Poll, H. 1909 Zur Lehre von den sekundaren sexual Charakteren. Ges. Nat. Freund 6, Jahrgang 09, p. 331. Seligmann and Shattock 1914 Relation between seasonal assumption ofeclipse plumage in the mallard and function of testicle. Soc, London. Shattock and Seligmann 1906 An example of true hermaphroditism in do-mestic fowl, with remarks on the phenomenon of Path. Soc. London, vol. 57, Pt. I, p. 69. Smith, G. and Mrs. Haig Thomas 1913 On sterile and hybrid Gen., vol. 3, p. 39. Smith, Hammond 1911 The Field, p. 3 4. PLATE 1 explanation of figures 1 Holland bird 1429. 2 Holland bird 1428. 3 Holland bird 1427. 4 Holland bird 1426. 5 Hermaphrodite 1349. 6 Michigan hermaphrodite 1616. SEX STUDIES. XI ALICE M. BOHING AND RAYMOND PEARL PLATE 1. 31 PLATE 2 EXPLANATION OF FIGURES 7 Dissection of urogenital system in a normal hen. d, oviduct; o, the ovary;u, a ureter; v, a vas deferens. 8 Section of ducts entering cloaca in a normal hen. a, is artery, u, the ureter,V, the vas deferens, or Wolffian duct. 9 Same as v in figure S, showing columnar epithelium of the vas in a normalhen. 32 SEX STUDIES. XI ALICE M. BOEING AND RAYMOND PEARL PLATE 2
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