THE CEREBRO-SPINAL AXIS. 387 



FIG. 140. 



View of the cerebro-spinal axis of the nervous system (after Bourgery). The right 

 half of the cranium and trunk of the body has been removed by a vertical section; 

 the membranes of the brain and spinal marrow have also been removed, and the 

 roots and first part of the fifth and ninth cranial, and of all the spinal nerves of th'e 



