252 ERNEST E. JUST. 



Schultze, O. 



'99 Ueber das erste Auftreten cler bilateralen Symmetric im Yerlauf der Ent- 



wicklung. Archiv Mik. Anat., LV. 

 Watase, S. 



'90 Studies on Cephalopods. I. Cleavage of the Ovum. Jour. Murph., IV. 

 Whitman, C. O., and Eycleshymer, A. C. 



'97 The Egg of Amia and its Cleavage. Jour. Morph., XIII. 

 Wilson, E. B. 



'92 The Cell Lineage of Nereis. Jour. Morph., VI. 

 Wilson, E. B., and Mathews, A. P. 



'95 Maturation, Fertilization, and Polarity of the Echinoderm Egg. Jour. 

 Morph., X. 



