264 



BIPOLAR AND MULTIPOLAR NERVE-CELLS. 



contents of the nerve-cell, e, which have shrunk away 

 from the sheath after action by arsenious acid. (Kol- 

 liker.) 



Fig. 118, caudate nerve vesicle of the multiple 

 kind: a, the nucleated vesicle; b, its processes. 



Fig. 118. 



Bipolar nerve-cell, magni- 

 fied 350 diameters. 



Fig. 119. 



Multipoint nerve-cells, magnified 200 diameters. 



These probably are continuous with the axis cylin- 

 ders of the nerves, in connection with the vesicle. 

 Fig. 119, tubules and nerve-cells : A, from sympa- 

 thetic ganglion ; *, a sepa- 

 rate cell, showing its pellu- 

 cid nucleus and nucleolus : 

 B, from the gray substance 

 of human cerebellum: <z, b, 

 plexus of primitive fibres ; 

 <?, nucleated globules ; *, 

 a separate cell from hu- 

 man ganglion of Gasser. 

 (Wagner.) 



Fig. 120, tubules and 

 nerve-cells of human brain : A, 

 nerve-cells lying in the midst 

 of varicose nerve -tubes and 

 blood-vessels in the substance 

 of the optic thalamus : #, glob- 

 ule more enlarged ; , small vas- 

 cular trunk: B, B, multipolar 

 nerve-cells from the dark por- 

 tion of the eras cerebri. (Pur- 

 kinje.) 



Such being the construction 

 of the fibrous and vesicular ma- 

 terial, we may next inquire into 

 their functions. 



Nerve cells and tubes, magnified 353 diameters. 



B 



Human nerve tubules and cells. 



