CELL MASSES IN THE FOREBRAIN 451 
: 
Faso Silos 
S —_ e 9 je e °a 
sam oO 5 ied oO . Yow 
ve, 
Maer atace ee S eX She 0 Q L> Ox a 
ro) g, 
36 
Fig. 34 A section similar to the last, taken near the rostral end of the ventric- 
ular ridge. The internal capsule fibers are related largely to the pallial thicken- 
ing (c.l.). The medial part of the fiber bundles below belongs to the medial fore- 
brain bundle. Its fibers are related only to the caudate and olfactory nuclei. 
Fig. 35 Vesicular structures in the caudate nucleus. a, outline of a trans- 
verse section to indicate the position in which such vesicles are found. This is 
nearly at the same level as figure 25. Vesicles are found both rostral and caudal 
to this level. 6, an oblique section of a vesicle the lumen of which contains a 
flattened nucleus of unknown character. Two blood corpuscles are seen. Vesi- 
cles often have capillaries closely connected with them. c, a transverse section 
of a vesicle with very sharply defined lumen. Note the granular contents of the 
inner ends of the cells. There are also faintly stained granules in the lumen. 
The isolated nuclei in b and ¢ are nuclei of nerve cells lying near the vesicles. 
Magnification in b and c, 625 diameters. 
Fig. 36 Section of the thickened ependyma surrounding the middle ventric- 
ular groove including a part of the lentiform nucleus. The nerve cells are 
drawn in outlines, the nuclei of the ependyma cells in black. The lines represent 
the peripheral processes of the ependyma cells. From the same section as figure 
16. Magnification 112 diameters. 
