THE INTERNAL CONFIGURATION OF THE CEREBRAL HEMISPHERES 249 



is formed by the white substance of the hemisphere, and along its medial border 

 are the stria terminalis and tail of the caudate nucleus. At the end of the latter 



Genii of corpus 



callosum 

 Septum pellucidum 



Thick portion of sep- 

 tum pellucidum 



Hippocampus -9f~~ 



Inferior horn of, 

 lateral ventricle 



-Head of caudate 

 nucleus 



i- I nterventricular 

 foramen 



"Chorioid fissure 



ft -Fimbria of 



hippocampus 



Transverse fissure of cerebrum ! 

 Tfialamus 



Fig. 179. 



\ Hippocampal commissure 

 Pineal body 



Lateral ventricle -- 



Septum pellucidum 



Thick portion of 

 septum pellucidum 



Column of fornix 



Thalamus I ', 

 Third ventricle i 

 Pineal body 



\ Thalamus 

 \ Tania of thalamus 

 'Habenular trigone 



'Genu of corpus 

 callosum 



Head of caudate 

 nucleus 



- I nterventricular 

 foramen 



Fimbria of hippo- 

 campus 



- Inferior horn of 

 lateral ventricle 



" Hippocampus 



Fig. 180. 



Figs. 179 and 180. Dissections of the rostral part of the sheep's brain to show the relation 

 of the lateral ventricles, fornix, fimbria, and hippocampus to the transverse fissure, thalamus, and 

 third ventricle. Dorsal views. In Fig. 180 a triangular piece, including portions of the fornix, 

 fimbria, and hippocampus, has been removed. 



the amygdaloid nucleus bulges into the terminal part of the inferior horn (Fig. 

 185). The floor and medial wall of the inferior horn are formed in large part 



