THE SPINAL CORD. 517 



does not decussate at the medulla but passes downward on the inner 

 side of the anterior column of the same side, constituting the direct 



FIG. 237. DIAGRAM OF THE PYRAMIDAL TRACT OR MOTOR PATH. III. Common oculo-motor 

 nerve. IV. Pathetic nerve. V. Motor division of the trigeminal nerve. VI. The abducens 

 nerve. VII. Facial nerve. IX. and X. Motor divisions of the glosso-pharyngeal and pneumogas- 

 tric nerves. XI. Spinal accessory nerve. XII. HypoglossaJ nerve. (Van Gehuchten.} 



pyramidal tract or column Turck. This tract can be traced down, as 

 a rule, only as far as the mid-dorsal region. As it descends it becomes 



