GENERAL MORPHOLOGY OF THE CELL 



21 



however, in 1882, extended the term so as to denote the entire 

 active cell-substance, including the nuclear material, suggesting that 

 the latter be called nucleoplasm, and that of the cell-body cytoplasm. 



f*:-v : r^"iv^v,v.<. 



."-^'s? - -'-'->;-> 





Fig. 8 Various cells sliowing the typical parts. 



A. From peritoneal epithelium of the salamander-larva. Two centrosomes at the right 

 Nucleus showing net-knots. [FLEMMING.] 



B. Spermatogonium of frog. Attraction-sphere (aster) containing a single centrosome 

 Nucleus with a single plasmosome. [HERMANN.] 



C. Spinal ganglion-cell of frog. Attraction-sphere near the centre, containing a single centro- 

 some with several centrioles. [LENHOSSEK.] 



D. Spermatocyte of Proteus. Nucleus in the spireme-stage. Centrosome single; attraction- 

 sphere containing rod-shaped bodies. [HERMANN.] 



These terms have been adopted by many, but not all, later writers, 

 the hybrid word nucleoplasm having, however,-at Flemming's sug- 

 gestion, been changed to karyoplasm. At the present time, there- 

 fore, the word protoplasm is used by some authors (Biitschli, Hertwig, 



