26 TEXT-BOOK OF EMBRYOLOGY. 



References for Further Study. 



BUCHNER, P.: Praktikum der Zellenlehre. Teil I. 1915. 



CONKLIN, E. G.: Heredity and Environment in the Development of Men. 3d Ed., 

 1920. 



CRAGIN, E. B.: Text-book of Obstetrics. 1915. 



HERTWIG, R.: Eireife und Befruchtung. In Hertwig's Handbuch der vergleichenden 

 und experimentellen Entwickelungslehre der Wirbeltiere. Bd. I, Teil I, Kap. II, 1903. 

 Contains extensive bibliography. 



KELLICOTT, W. E.: Text-book of General Embryology. Chap. IV, 1913. 



MARSHALL, F. H. A.: The Physiology of Reproduction. 1910. 



MORGAN, T. H.: Heredity and Sex. 1913. 



MORGAN, T. H.: The Physical Basis of Heredity. 1919. 



THOMSON, A.: The Maturation of the Human Ovum. Journal of Anatomy, Vol. 53, 

 1919. 



WIEMAN, H. L.: The Chromosomes of Human Spermatocytes. American Journal 

 of Anatomy, Vol. 21, 1917. 



WILSON, E. B.: The Cell in Development and Inheritance. 1900. 



