SPINAL CORD AND COMMENCEMENT OF MEDULLA OBLONGATA. 183 



anterolateral column and the direct lateral cerebcllar tract at 

 the periphery of the lateral column have become medullated. 



FIG. 110. 



lary 

 ro' >li 



derived from the spinal'c'ordTsniccluiVai-y. Fibrae arciformes=flbrae arciformes extern* 

 anteriores. The posterior external arciform fibres can be seen, outside and above, be- 

 tween the restiform body and the posterior column. 



Ilinterittranri, Posterior column. //'"'. Nehen Olire. Pogterior accessory olivary process. 



Inn. Keben Olive, Internal accessory olivary process. ttlinn Zun#fihen*chicht, Inter-olivary layer. 



Seitenstr. Saint. Lateral (cerebellar) tract. 



We now see fibres arising from the nuclei of the posterior 

 columns, which pass in a curve through the gray matter (fibrae 

 arciibrmes internee), decussate in front of the central canal, and 



