THE NERVOUS SYSTEM. 



Corpus callosum Hippocampal fissure 



549 



Olfactory stalk 



. 



Lamina terminalis | 

 Anterior commissure 

 Beginning anterior column of fornix 



Hippocampal fissure 

 horioid fissure 



FIG. 481. 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 preterminal 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. 482. 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, 

 from Quain's Anatomy. 



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

 hippocampal fissure; Th. } thalamus 



