226 Journal of Comparative Neurology and Psychology. 



TABLE V. 



showing in scjuare millimeters the relation between the absolute areas 

 of the cross-sections of the ventral and dorsal ;-oots. 



2. Relation of the Sise of the Nen'e Fibers. — If the reader 

 will imagine the curve for the area of the dorsal roots (Fig. 6) 

 overlaid by the curve showing the absolute number of fibers in 

 the dorsal roots (Fig. 7) it will be readily seen that the two 

 curves coincide remarkably ; the greatest difference occurring 

 in the lumbo-sacral nerves. In an earlier paper (Ingbert, 

 June, 1903, Chart III), these two curves are drawn superposed. 

 The fact that the two nerves run nearly parallel shows that in 



