NERVE-TISSUE. 



289 



fibers within the gray substance of the spinal cord. The nerves 

 of the anterior or motor roots originate from the motor ganglia ; 



FIG. 121. ANTERIOR PORTION OF THE SPINAL CORD 

 OF A CHILD. TRANSVERSE SECTION. 



F, anterior longitudinal fissure ; P, pia mater ; W, white substance, traversed by offshoots 

 of the pia mater ; O, passage of the anterior or motor nerves through the white substance; G, 

 gray substance, containing JV, ganglionic elements; C, central canal, containing granular 

 coagulated cerebro-spinal liquid. Magnified 150 diameters. 



a small number of nerve-fibers reach the motor roots from the 

 white substance. From the reticulum of Gerlach nerve-fibers 

 19 



