48 TEXT-BOOK OF EMBRYOLOGY. 



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

 experimentellen Entwickelungslehre der Wirbeltiere, Bd. I, Teil I, Kap. Ill, 1903. Contains 

 extensive bibliography. 



KELLICOTT, W. E.: Chordate Development. Chap. I, 1913. 



MACBRIDE, E. W.: Text-book of Embryology. Vol. I, 1914. 



MORGAN, T. H. and HAZEN, A. P.: The Gastrulation of Amphioxus. Journal of 

 Morphology, Vol. 16, 1900. 



WILLEY, A.: Amphioxus and the Ancestry of the Vertebrates. 1894. 



WILSON, E. B.: Amphioxus and the Mosaic Theory of Development. Journal oj 

 Morphology, Vol. 8, 1893. 





