Plate IV. Medial view of the right cerebral hemisphere of an albino rat 

 with most of the thalamus cut away so as to expose the hippocampal 

 formation, X 4. 



bo, olfactory bulb; ca, anterior commissure in lamina terminalis; 

 cc, corpus callosum; chd, dorsal part of hippocampal commissure; 

 chv, large ventral part of hippocampal commissure or commissura 

 fimbriae; co, optic chiasma; fac, fasciola cinerea; fch, fissura chori- 

 oidea; fd, fascia dentata; fh, hippocampal fissure; fim, fimbria; 

 gs, gyrus subsplenialis; gsc, gyrus supracallosus; h, hippocampus 

 proper covered by white fibres connecting with the fimbria; s, septum; 

 tfd, tuberculum fasciae dentatae; th, cut surface of thalamus. 



