280 S. WALTER RANSON 



PLATE 4 



EXPLANATION OF FIGURES 



9, 10 and 11 Three sections from a series through an entering radicle of the 

 seventh cervical dorsal root. For topograph}' see figure 1. Figure 9 represents a 

 level just above the entrance of the radicle (a) into the cord, figure 10, a level 

 through the middle of the entering radicle, and figure 11, a level near its lower mar- 

 gin. The lettering is the same as that in figure 1. At 1, 2, 3, 4, 5 and 6 are indi- 

 cated bundles of non-meduUated fibers which can all be traced into Lissauer's 

 tract. X 82. 



