ANATOMY AND PHYSIOLOGY OF NERVOUS SYSTEM. 

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I Fig. 231. The Structure of .Nervous Tissue. (LANDOIS.) 



1, Primitive fibril. 2, Axis-cylinder. 3, Remak's fiber. 4, Medullated 

 varicose fiber. 5, 6, Medullated fiber with Schwann's sheath. C, Neurilemma. 

 t, t, Ranvier's nodes. 6, White substance of Schwann. d, Cells of the endo- 

 neurium. a, Axis-cylinder, x, Myelin drops. 7, Transverse section of nerve- 

 fiber. 8, Nerve-fiber acted on with silver nitrate. /, Multipolar nerve-cell from 

 spinal coid. z, Axial cylinder process, y, Protoplasmic processes; to the right 

 of it a bipolar cell. II, Peripheral ganglionic cell with a connective-tissue cap- 

 sule. ///, Ganglionic cell, with o, a spiral, and n, straight process, m, Sheath. 



Granules. The other characteristic feature of nerve-proto- 

 plasm is the existence within it of angular granules. These show a 

 iial liking for basic aniline dyes, as methylene blue. By many 



