THE NERVOUS SYSTEM. 



Corpus callosum Hippocampal fissure 



} 



519 



Olfactory stalk 



Lamina terminal is | 

 Anterior commissure 

 Beginning anterior column of fornix 



Hippocampal fissure 

 Chorioid fissure 



FIG. 443. Graphic reconstruction of the mesial hemisphere wall of a human foetus 



(fourth month). His, from Quain's Anatomy. 



c and v, Anterior and posterior parts of pre terminal area; li, lamina infrachorioidea; km, limbus or 

 border of mesial hemisphere wall (gyrus dentatus and fimbria) between hippocampal and 

 chorioid fissures; P, " stalk " of hemisphere. 



falx 



FIG. 444. Diagram of a transverse section through the fore-brain of a human foetus (fourth 

 month) to show the relations of the margins of the mesial walls of the hemispheres. His t 

 from Quain's Anatomy. 



Cs., corpus striatum; fi., limbus medullaris (fimbria); /a., limbus corticalis (gyrus dentatus); h.f. t 

 hippocampal fissure; Th., thalamus 



