DEFECTIVE PLUTEUS LARV.E. 393 



Conklin, E. G. 



'24 Cellular Differentiation. General Cytology. Univ. of Chicago Press. 

 Driesch, H. 



'oo Die isolierten Blastomeren des Echinidenkeimes. Arch. f. Entw. Mech., 



Bd. X. 

 '06 Studien zur Entwicklungsphysiologie der Bilateralitat. Arch. f. Entw. 



Mech., Bd. XXI. 

 Fry, H. J. 



'24 Cell Dissection by Hand. Anat. Rec., Vol. 28, Xo. 5. 

 Plough, H. H. 



'24 Partial Pluteus Larvae from Isolated Blastomeres of the Two Cell Stage of 



Arbacia (abstract). Anat. Rec., Vol. 29, No. 2. 

 Harnly, M. H. 



'26 Localization of the Micromere Material in the Cytoplasm of the Egg of 



Arbacia. Jour. Exp. Zool., Vol. 45, No. i. 

 Runnstrom, J. 



'14 Analytischen Studien iiber Seeigelentwicklung. Erst. Mitt. Arch. f. 



Entw. Mech., Bd. XL. 

 Taylor, C. V., D. H. Tennent and D. M. Whitaker. 



"26 Investigation on Organization of Echinoderm Egg. Carnegie Inst. Year 



Book No. 25, p. 148. 

 Tennent, D. H. and C. V. Taylor. 



'24 Prel. Report on the Development of Egg Fragments. Carnegie Inst. 



Year Book No. 23, p. 201. 

 Von Ubisch, L. 



'25 Entwicklungsphysiologischen Studien an Seeigelkeimen I. Zeit. f. Wissent. 



Zool., Bd. 124. 

 Wilson, E. B. 



'25 The Cell in Development and Heredity. 3d Ed. Macmillan, New York. 



