Rh I XEXCE PH ALOX 



101 



which runs along the side of the hippocampal ridge and is 

 known as the fimbria. The stria medialis Lancisii is the 

 reduced fimbria of the degenerated supracallosal part of the 

 hippocampus. The fornix, which has been seen ending in 

 the mamillary body, is the direct continuation of the fimbria. 



Fig. 8 



Diagram of the medial surface of the cerebral hemisphere of the 

 rat, from Johnston; shading as in Fig. 7. 



Fig. 9 



Middle part of a transverse -section of the brain of an albino rat 

 immediately behind the genu of the corpus callosum, stained with a cell 

 stain; c.c, corpus callosum; h., hippocampus (praecallosal portion extend- 

 ing back a short distance under the genu); i., indusium griseum; n.a.s., 

 nucleus accumbens septi; s.c.c, sulcus corporis callosi; v. I., lateral 

 ventricle; /., lamina zonalis of the neocortex. 



