PLATE 15 
EXPLANATION OF FIGURES 
66 Transection through the cerebral hemispheres caudal to the anterior com- 
missure. Toluidin blue method. 46. 
67 Transection through the cerebral hemispheres slightly caudal to the level 
shown in fig. 66. Toluidin blue method. X 46. Shows particularly the rostral 
portion of the pars magnocellularis of the nucleus preopticus and its relation to the 
pars parvocellularis. 
corp. precom., pars intermed., corpus precommissurale, pars intermedia; this, 
the caudal prolongation of the pars supracommissuralis, meets the nucleus pyri- 
formis at the posterior pole of the hemisphere, it likewise comes in close contact 
with the extension of the pars commissuralis caudally and ventrally, the pars par- 
vocellularis of the nucleus preopticus; fasc. lat. hem., fasciculus lateralis hemi- 
sphaerii, the lateral forebrain bundle; consisting of the tractus strio-thalami- 
cus, tractus thalamo-striaticus, tractus olfacto-hypothalamicus lateralis and 
tractus hypothalamo-olfactorius lateralis; fasc. med. hem., fasciculus medialis 
hemisphaerii, the medial forebrain bundle; nucl. entoped., nucleus entopeduncu- 
laris; nucl., preopt. pars magnocell., nucleus preopticus, pars magnocellularis ; 
nucl. preopt., pars parvocell., nucleus preopticus, pars parvocellularis anterior; 
nucl. pyr., nucleus pyriformis; nucl. ten., nucleus teniae; s. lim. tel., sulcus limitans 
telencephli; s. ypsil., fur. ant., sulcus ypsiliformis, furca anterior. 
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