TF-TK LATER AT. VENTRICLE. 7.V. 



The posterior cornu (o) is narrower and generally longer than the Posterior 

 anterior, l>ut its breadth and length vary much in different brains. 1C 

 It extends backwards into the occipital lobe, being curved outwards form ; 

 round the parieto-occipital fissure of the internal surface of the 

 hemisphere. Along its inner side is an elongated white eminence inner wall ; 

 the hippocampus minor (i), which will be seen, on pushing the and floor ' 



FIG. 275. VIEW OF THK LATERAL VENTRICLES : ox THE LEFT SIDE THE 

 DESCENDING CORXU is LAID OPEN. 



a. a. Ends of the corpus callosum. 



b. Septum lucidum, enclosing the 

 small space of the fifth ventricle. 



c. Fornix. 



d. Posterior pillar of the foruix or 

 tsenia hippocampi. 



e. Caudate nucleus of the corpus 

 Btriatum. 



/. Taeuia semicircularis. 



g. Optic thalamus. 



h. Choroid plexus. 



?'. Hippocampus minor. 



k. Eminentia collateralis. 



/. Hippocampus major. 



o. Posterior covnu of the ventricle. 



handle of the scalpel into the calcarine fissure, to be an infolding 

 of the brain wall corresponding to that fissure ; and the floor is 

 formed by the hinder part of the eminentia collateralis (&), which, in 

 the same manner as the preceding, represents the collateral fissure. 



The middle or descending cornu leaves the hinder part of the Middle 

 body of the ventricle opposite the splenium of the corpus callosum, hc 

 and runs downwards and forwards in the temporal lobe, describing direction 



