FIG. 155. PORTION OF GRAY SUBSTANCE FROM THE ANTERIOR HORN OF THE SPINAL 

 CORD OF MAN, SHOWING NERVE CELL BODIES, DENDRONS, MEDULLATED AND 

 NON-MEDULLATED PORTIONS OF AxONS, AND NETIROGLIA. 



(From Salinger, after Kolliker.) 



FIG. 156. TRANSVERSE SECTION THROUGH THE WHITE SUBSTANCE OF THE HUMAN 



SPINAL CORD. 



The dark oval bodies are cross-cut axis cylinders; the surrounding light halos 

 represent the myelin sheath. The coarser trabeculae are connective tissue, contin- 

 uous with the finer neuroglia framework. (After Salinger.) 



142 



