PLATE 16 
EXPLANATION OF FIGURES 
68 Transection, at the level of the chiasma. Weigert method. X 17. 
69 Transection at approximately the same level as shown in fig. 68. Ramé6n y 
Cajal method. x 46. 
corp. precom., pars intermed., corpus precommissurale, pars intermedia; fasc. 
lat. hem. ——, fasciculus lateralis hemisphaerii; fasc. med. hem. <——, fasciculus 
medialis hemisphaerii; nucl. entoped., nucleus entopeduncularis; nucl. preopt., 
pars magnocell,, nucleus preopticus, pars magnocellularis; nuecl. preopt., pars 
parvocell., nucleus preopticus, pars parvocellularis; uel. pyr., nucleus pyriformis; 
sac. dors., saccus dorsalis; s. ypsil., fur. post., sulcus ypsiliformis, furca poste- 
rior; tr. hyp. olf. med., tractus hypothalamo-olfactorius medialis; tr. olf. hyp. lat. 
<——, tractus olfacto-hypothalamicus lateralis; tr. olf. thal. med., pars dors., 
tractus olfacto-thalamicus medialis, pars dorsalis; tr. olf. thal. med., pars vent., 
tractus olfacto-thalamicus medialis, pars ventralis; tr. opt., tractus opticus; 
ir. praeth. cin., tractus praethalamo-cinereus of Kappers; tr. preopt. entoped. 
<——, tractus preoptico-entopeduncularis; tr. preopt. inlermed., pars ant. ——, 
tractus preoptico-intermedius, pars anterior; (r. preopt. intermed., pars lat., 
tractus preoptico-intermedius, pars lateralis; tr. strio-thal. cruc. <——, tractus 
strio-thalamicus cruciatus; tr. strio-thal. incruc. <-—, tractus strio-thalamicus 
incruciatus; tr. ten., tractus teniae. 
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