Rand. — Nerve-Cell Centrosome. 



PLATE 7. 



All the figures magnified 2000 diameters. 



Figs. 46-52. Dividing or recently divided cells from the regenerated epidermis of 

 a worm, after 11 days' regeneration. Hermann's plat.-acet.-osm., iron- 

 haematoxylin. See pages 146-147 for a discussion of the membranes. 



