336 



Embryogenesis: Progressive Differentiation 



zelnen organbildenden Keimbezirke. Roux' Arch. 

 Entw.-mech., 1 39. ■4-38-4-92. 

 Ubisch, L. von 1939b Keimblattchimarenfor- 

 schung an Seeigellarven. Biol. Rev., ^^.-88-1 03. 



1940 Weitere Untersuchungen iiber Reg- 

 ulation und Determination im Ascidienkeim. 

 Roux' Arch. Entw.-mech., i 40:1-24: 



Weiss, Paul 1949a Differential growth; in 

 Chemistry and Physiology of Growth, edited by 

 A. K. Parpart, pp. 35-186. Princeton University 

 Press, Princeton, New Jers(;y. 



1949b Growth and differentiation on the 



cellular and molecular levels. Exptl. Cell Res., 

 y(Suppl.):475-482. 



1950 Perspectives in the field of morpho- 

 genesis. Quart. Rev. Biol, 25.- 172-1 98. 



Wilson, E. B. 1899 Cell-lineage and ancestral 

 reminiscence. Biol. Lect. Marine Biol. Lab., 

 Woods Hole, ^.-21^2. 



1903 Experiments on cleavage and local- 

 ization in the nemertine egg. Roux' Arch. Entw.- 

 mech., ^^.-411-460. 



■ ■ 1904a Experimental studies on germinal 



localization. I. The germ-regions in the egg of 

 Dentalium. J. Exp. Zool., y.1-72. 



1904b Experimental studies in germinal 



localization. II. Experiments on the cleavage 

 mosaic in Patella and Dentalium. J. Exp. Zool., 

 y.- 197-268. 



Yatsu, N. 1904 Experiments on the development 

 of egg fragments in Cerebratulus. Biol. Bull., 6: 

 123-136. 



1910 Experiments on germinal localiza- 

 tion in the egg of Cerebratulus. J. Coll. Sci. Tok- 

 oyo, 27(17) :l-37. 



1912 Observations and experiments on 



the ctenophore egg. III. Experiments on germinal 

 localization of the egg of Beroe ovata. Annot. 

 Zool. Jap., 5.-5-13. 



Ziegler, H. E. 1898 Experimentelle Studien 

 iiber die Zelltheilung. III. Die Furchungszelleri 

 von Beroe ovata. Roux' Arch. Entw.-mech., 7;34- 

 64. 



