EFFECTS OF GONAD GRAFTS IN CHICKS 41 



LiLLiE, F. R. 1917 b The free-martin; a study of the action of sex hormones 

 in the foetal life of cattle. Jour. Exp. Zool., vol. 23, pp. 371-452. 

 1919 The development of the chick. 2nd edition. Henry Holt & 

 Co., New York. 



Moore, C. R. 1919 On the physiological properties of the gonads as control- 

 lers of somatic and psychical characteristics. I. The rat. Jour. 

 Exp. Zool., vol. 28, pp. 137-160. 



Murphy, J. B. 1913 Transplantability of tissues to the embryo of foreign 

 species. Jour. Exp. Med., vol. 17, pp. 482-492. 



1914 Studies in tissue specificity. III. Factors of resistance to hete- 

 roplastic tissue-grafting. Ibid., vol. 19, pp. 513-522. 



1916 The effect of adult chicken organ grafts on the chicken embryo. 

 Ibid., vol. 24, pp. 1-5. 



Pearl, R., and Curtis, M. R. 1909 Studies on the physiology of reproduction 



in the domestic fowl. III. A case of incomplete hermaphroditism. 



Biol. Bull., vol. 17, pp. 271-286. 

 Pearl, R. 1917 Sex-ratio in the domestic fowl. Proc. Amer. Phil. Soc, vol. 



56, pp. 416-436. 

 Peebles, F. 1898 Some experiments on the primitive streak of the chick. 



Arch. Entw'mech., Bd. 7, S. 405-429. 

 Pezard, a. 1918 Le conditionnement physiologique des caracteres sexuels sec- 



ondaires chez les oiseaux. Bull. Biol. Fra. Bel., T. 52, pp. 1-176. 

 Riddle, O. 1916 Sex control and known correlation in pigeons. Amer. Nat., 



vol. 50, pp. 385-410. 



1917 a The control of the sex-ratio. Jour. Wash. Acad. Sci., vol. 7, 

 pp. 319-356. 



1917 b Size and length relation of the right and left testes of pigeons 



in health and disease. Anat. Rec, vol. 11, pp. 87-102. 

 Rous, P., and Murphy, J. B. 1911 Tumor transplantations in the developing 



embryo. Jour. Amer. Med. Assoc, vol. 56, pp. 471-472. 

 Semon, R. 1887 Die indifferente Anlage der Keimdriisen beim Hiihnchen und 



ihre Differenzierung zum Hoden. Jen. Zeitsch. Naturw., Bd. 21, S. 



46-86. 

 Steinach, E. 1912 Wilkiirliche Umwandlung von Saugetier-Mjinnchen in Tiere 



mit ausgepragt weiblichen Geschlechtscharacteren und weiblicher 



Psyche. Arch. f. d. ges. Physiol., Bd. 144, S. 71-108. 



1913 Feminierung von Miinnchen und Maskulierung von Weibchen. 



Zentralb. f. Physiol., vol. 27, pp. 717-723. 

 Sturtevant, a. H. 1920 Intersexes in Drosophila. Sci., n.s., vol. 51, no. 



1317, pp. 325-327. 

 Swift, C. H. 1915 Origin of the definitive sex-cells in the female chick and 



their relation to the primordial germ-cells. Am. Jour. Anat., vol. 18, 



pp. 441^70. 



1916 Origin of the sex-cords and definitive spermatogonia in the male 



chick. Ibid., vol. 20, pp. 375-410. 



