26 ATLAS OF NERVE CELLS 



Plate VIII. shows one of the intrinsic cells lying in the median gray matter near to the 

 white column. The large size of its body, the great number of its dendrites, and their rich 

 branching are very evident. The neuraxon is not visible. To the right of the plate a longi- 

 tudinal section through the white column is seen. This column is made up of fibres having 

 the characteristic appearance of axis cylinders, as contrasted with dendrites. Fine collaterals 

 are seen to come off from some of these fibres, at right angles, and to enter the gray 

 matter. These form the means of communication between the fibres of the columns and 

 the cells of the gray matter. They terminate in free extremities. 



To the left of the plate several cells are to be seen with fine radiating branches entirely 

 different from the nerve cells and branches. These are the neuroglia cells, which form the 

 supporting framework of the spinal cord. 



