THE DIENCEPHALON 



507 



lateral nuclei of the thalamus. This fibre bundle is ill-defined and 

 soon blends with the mesial lemniscus or fillet, whose fibres, turn- 

 ing upward to reach the middle of the posterior limb of the inter- 

 nal capsule, lie in relation with the ventral surface of the optic 

 thalamus. 



FlO. 393. A FRONTAL SECTION THROUGH THE INTERNAL CAPSULE AND CORONA RADIATA 



C, fissure of Rolando ; CA, Ammon's horn ; Ca, ascending frontal convolution ; Cell, 

 corpus callosum ; Ce, external capsule ; Cex, capsula extrema ; Ci, 'internal capsule ; 

 Cllm, calloso-marginal fissure ; Cng, cingulum ; Coa, anterior commissure ; Op, ascend- 

 ing parietal convolution; Cr, corona radiata; Csth, hypothalamic nucleus of Luys; Fd, 

 fascia dentata ; fFp, fronto-pontine tract ; Fim, timbria ; Fli, inferior longitudinal fas- 

 ciculus; Fo, fornix; For, arcuate fasciculus ; Frn, gyrus fornicatus ;frtf, Meynert's fas- 

 ciculus ; Fs, superior frontal convolution ; /, superior frontal sulcus : glp, globus pallidus ; 

 H, Forel's field ; HI, hippocampal gyrus ; /, island of Reil ; ///, oculomotor nerve ; Narc, 

 arcuate nucleus ; JVc, caudate nucleus ; Nl, lateral nucleus of the thalamus ; Nm, median 

 nucleus of same ; Ntg, red nucleus; Oti, inferior occipito-temporal sulcus; Oil, inferior 

 occipito-temporal convolution ; Po, pons ; Pu, putamen ; rcc, fronto-occipital bundle ; 

 Eop, optic radiation ; S, fissure of Sylvius ; SnS, substantia nigra ; ssc, stratum subcal- 

 loaum; sse, tapetum ; tit, stria cornea; Ti, inferior temporal convolution; ti, inferior 

 temporal sulcus ; 777, optic tract ; TI, median longitudinal striae ; Tm, middle temporal 

 convolution ; tm, middle temporal sulcus ; Ts, superior temporal convolution ; ts, superior 

 temporal sulcus; Tt, taenia thalami; Tte, teenia tecta; U, uncus; VI, lateral ventricle; 

 Vli, inferior horn of same. Weigert's stain, x l. (After Marburg.) 



