* N 



SECTION THROUGH THE POSTERIOR COLUMNS AND BASE OF THE POSTERIOR HORN OF THE 

 HUMAN SPINAL CORD SHOWING THE CELLS OF THE COLUMN OF CLARKE WITH NUMEROUS DEN- 

 DRITES AND AXIS CYLINDER PROCESS. IN THE CELL IN THE CENTRE OF THE PICTURE THE NEU- 

 RAXON IS SEEN TO PASS FORWARD AND THEN TURN OUTWARD IN ITS COURSE TOWARDS THE DIRECT 

 CEREBELLUM COLUMN X 190 DIAM. 



PLATE IX. 



