OF THE NEIU'US OCTAVUS. 139 



It may be followed till the sacral part of it. The same tract is 



Fig. 21. 



Scheme D. 



Scheme of the descending secundary octavus-flbres. 



found contra-lateral, but by far less important. It may be judged 

 to be a ventral descending octavo-spinal tract. 



