LITERATURE REFERRED TO 



ASSHETON, R. (1894). "The Primitive Streak of the Rabbit, the 

 causes which may determine its Shape, and the part of the 

 Embryo formed by its activity." 



Quart. Journ. Micr. Sci. Vol. xxxvu. 



55 



(1894). ; '0n the Growth in Length of the Frog Embryo. 



Quart. Journ. Micr. Sci. Vol. xxxvu. 



(1894). ''A. Re-investigation into the early stages of the 

 Development of the Rabbit." 



Quart. Journ. Micr. Sci. Vol. xxxvu. 



(1896). "An Experimental Examination into the growth 

 of the Blastoderm of the Chick." 



Proc. Roy. Soc. Vol. LX. 



- (1898). "The Development of the Pig during the First Ten 

 Days." Quart. Journ. Micr. Sci. Vol. XLI. 



(1898). " The Segmentation of the Ovum of the Sheep, with 

 observations on the Hypothesis of a Hypoblastic Origin for 

 the Trophoblast." Quart. Journ. Micr. Sci. Vol. XLI. 



(1905). "On Growth Centres in Vertebrate Embryos." 



Anat. Anz. Vol. xxvu. 



(1907). "Certain Features Characteristic of Teleostean 

 Development." Guy's Hospital Reports. Vol. LXI. 



(1912). ;; Gastrulation in Birds." 



Quart. Journ. Micr. Sci. Vol. LVIII. 



BALFOUR, F. M. (1885). "Vertebrate Embryology." Macmillan. 



