14 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



8. Whitney, D. D. Journ. Exp. Zool., Vol. 20, p. 263. 1916; 

 and Vol. 24, p. 101. 1917-18. 



-. Shull, A. F., and Ladoff, S. Journ. Exp. Zool., Vol. 21, p. 127. 

 1916. 



9. Issakowitsch, A. Biol. Centralbl. XXV (1905), p. 529 ; Arch. 

 Mikr-Anat,, LXIX (1906-7), p. 223. 



1.0. Heape, W. Proc. Camb. Philosoph. Soc, Vol. XIV, p. 201. 1907. 



11. Riddle, 0. See 3. 



12. Hertwig, R. Biol. Zentralbl, Vol. XXXII, p. 1. 1912. 



13. King, H. D. Biol. Bull., Vol. XX, p. 205, 1911 ; and Journ. 

 of Exp. Zool, Vol. 12, p. 319, 1912. 



14. Smith, Geoffrey. " Studies in the Experimental Analysis of 

 Sex." (2) Quart. Journ. Mic. Sci., Vol. LIV, p. 590, 1910 ; and (3) Q. J.M.S., 

 Vol. LV, p. 225, 1910 ; and (7) Q.J.M.S., Vol. LVII, p. 251, 1912 ; and 

 (10) Q.J.M.S., Vol. LIX, p. 267, 1914. 



15. Baltzer, F. Mitt. Zool. St. Neapol., 22. 1914. 



16. Bell, W. Blair. " The Sex Complex," p. 15. Bailliere, Tindall 

 and Cox, London, 1920. 



17. Benedict, F. G., and Emmes, L. E. Journ. of Biol. Chem., 

 Vol. 20, No. 3. 1915. 



18. Geddes, P., and Thomson, J. A. " Sex." Williams and Norgate. 

 London. 1914. 



19. Smith, Geoffrey. See 14. 



20. Moore, B. " Bio-Chemistry." Edward Arnold, London. 1921. 

 See Ch. I. 



21. Woodruff, L. L., and Erdmann, R. Journ. Exp. Zool., Vol. 17, 

 No. 4, p. 425, 1914 ; and Vol. 20, No. 2, p. 59, 1916. 



22. Seiler, J. Arch. f. Zellforch., XIII, Band, 2. Heft. p. 11. 

 Leipzig, 1914. 



23. Doncaster, L. Journ. of Genetics, Vol. IV, No. 1, p. 1. 1914. 

 See also 6 for fuller account of chromatin elimination. 



24. Boveri, T. Verh. d. Phys.— Med. Ges. Wurzburg, XLI, p. 83. 

 (1911). 



25. Bridges, C. B. Journ. Exp. Zool., Vol. XV, p. 587. 1913. 



26. Morgan, T. H., and Bridges, C. B. " Contributions to the 

 Genetics of Drosophila Melanogaster." Carnegie Institute of Washington, 

 p. 11. Washington, 1919. 



