440 J. B. JOHNSTON 
Figs. 11 to 30 Transverse sections of the right hemisphere drawn from sec- 
tions stained to demonstrate the size and grouping of the cell bodies. The con- 
trasts andlines of separation are not exaggerated. Magnification, 17.5 diameters. 
The position of each of these sections is indicated in figure 58. 
Fig. 11 Section through the base of the dorsal ridge. The dense layer in the 
medial wall of the pallium is in part hippocampus. The rest of the section be- 
longs to general pallium, with which the ridge is in connection. 
Fig. 12 Section a short distance behind the choroid fissure. The dense 
pallium in the medial wall is hippocampal. The dorsal ridge appears as an 
infolding of the general pallium. The pyriform lobe presents a confused arrange- 
ment of its cells. 
Fig. 13 Section at the caudal border of the choroid fissure and the base of 
‘the amygdaloid fissure. Hippocampal formation appears both above and below 
the choroid fissure. The large-celled nucleus appears on the ventricular surface 
of the basal lobe of the great ventricular ridge. The nucleus ot the lateral olfac- 
tory tract appears near the base of the amygdaloid fissure. Between them the 
general pallium is continuous with the central core of the ventricular ridge. 
Note the small ridge below, which contains the stria terminalis bundle. From 
this level forward the subiculum cornu ammonis is a conspicuous feature. 
Fig. 14 Section through the extreme rostral end of the temporal horn of the 
ventricle. Hippocampal formation has disappeared below the choroid fissure. 
The large-celled nucleus surrounds this part of the ventricle. The nucleus of 
the lateral olfactory tract has grown larger and the caudate nucleus appears and 
is fused with it. The nucleus lentiformis begins to take shape. 
