Its Composite and Dissoluble Nature. 157 



the ramifications of the cell processes which we are now 

 to study, are best exemplified. 



These 'cell groups of the cortex, of the cerebrum, and 

 of the superficial gray matter of the cerebellum, are won- 

 derfully well situated for nutrition, supported at ease, so 

 to speak, by the ■ fibrils of servant cells of inferior grade 

 (neuroglia), lodged in fluid beds, and guarded by protect- 

 ive or repair cells. Great advantages are theirs, and 

 great things in the line of intelligence are accomplished 

 by them. Not even our best methods of preparation and 

 staining have yet enabled us to trace all the delicate 

 branches, fibrils and processes which they thrust forth and 

 maintain extended, in order to touch and to lie in sentient 

 contact with those of other cells, thus enabling hundreds 

 of them to live in close perception and sentient communion 

 one with another. 



The cells of this class, or species, from the human cere- 

 bellum, or lesser brain, differ considerablj' in size and 

 general appearance, from those of the cerebrum, and also 

 from those of the spinal cord ; but from their position and 

 connections, their psychic role is believed to be similar, 

 since they are held to preside over and inaugurate the 

 passage of subjective sentience into molecular motion. 

 ' The protoplasmic processes of the large Purkinje ceils 

 from the folia of the human cerebellum interlace some- 

 what as sketched with a pen in the accompanying drawing. 

 But neither in this sketch, nor the merely diagramatic one 



