PHYSIOLOGY OF THE NERVOUS SYSTEM. 



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cell the white substance of Schwann being added after the separation of 

 the nerve-filament from the ganglion. 



Fig. 329.— The Structure of Nervous Tissue. (Landois.) 

 I, primitive fibrilla; 2, axis cylinder; 3. Remak's fibres; 4, mednllated varicose fibre: 5, ti, medul- 

 lated fibre, with Schwann's sheath ; C, neurilemma ; I, t, Ranvier's nodes : ft, white substance ot 

 Schwann; d, cells of the endoneurium ; u, axis cylinder; x. myelin drops ; J, transverse section ot nerye- 

 fibre; 8, nerve-fibre acted on with silver nitrate; I, multipolar nerve-cell from spinal cord; s, axial 

 oylioder process : y, protoplasmic processes-to the right of it a bipolar cell ; II. peripheral Rangliomc ceil, 

 with a connective-tissue capsule ; III, ganglionic cell, with, o, a spiral, and, n, straight process ; m, sheatn. 



The branched processes of nerve-cells are not, as a rule, concerned 

 in the formation of other nerve-trunks except in the bipolar or multi- 

 polar cells, but are concerned in bringing in communication other 



