THE BRAIN OF MODERN MAN 



805 



gray nialtrr. Tlic pyrariiid ocrupics its fuslotnarx Nriitroiiu'sial position 

 although Its outliiu' IS not clfarl\ di'liiu'cl dur to clillusioii intitli'nt to tlu' 

 crossinu ol p\ lainidal lii>c'rs. The cart iimlcix'iitial and inttrnu-diatc zones 



FIG. 343. MAN. LE\EL Ol- CAUDAL EXIKIAUI^ Ol DOKSAI. SENSOIO NLCLEI. 



CB, Column of Burdach; cen, Central Gray Matter; CG, (Joluinn of Goll; dt, Deiterso-spinal Tract; kle. 

 Dorsal Spinocerebellar Tract; Gow, Ventral Spinocerebellar Tract; hel, Spino-olivary Tract of I lelweg; 

 NB, Nucleus of Burdach; nbl, Nucleus of Blumcnau; nhy, Hypoglossal Nucleus; NG, Nucleus of Goll; nr, 

 Nucleus of Rolando; i>Y, Pyramid; PVX, Pyramidal Decussation; ref. Reticular Formation; rst. Rubrospinal 

 Tract; si>t. Spinothalamic Tract; tkij, Descending Trigeminal Tract; \ en, Ventral Gray Column. (Accession 

 Man. Section N 175. Actual Size. 13 X 10 mm.] 



show tliL- sanif ^ciuaal arrangcnuait as hcTctolorc and contain on tlic 

 periphery the two spinocerebellar tracts (^Ele.Guwj and in the inter- 



