PLATE 14 
EXPLANATION OF FIGURES 
61 Transection through the caudal part of the anterior commissure. Weigert 
method. X 17. 
62 Sagittal section slightly to one side of the median line, showing the tractus 
preopticus superior. Golgi method. X 46. The location of the different parts 
of the nucleus preopticus is indicated by broken lines. 
63 Neurone of the tractus preopticus superior. Golgi method. X 938. From 
sagittal section. (See fig. 62). 
64 Cells of the nucleus preopticus, pars parvocellularis anterior. Toluidin 
blue method. 575. 
65 Cells of the nucleus entopeduncularis. Toluidin blue method. X 575. 
corp. precom., pars com., corpus precommissurale, pars commissuralis; corp. pre- 
com., pars supracom., corpus precommissurale pars supracommissuralis; fasc. med. 
hem., fasciculus medialis hemisphaerii; n. opt., nervus opticus; nuwcl. preopt., pars 
parvocell., nucleus preopticus, pars parvocellularis; opl., optic chiasma; pars mag- 
nocell., pars magnocellularis of the nucleus preopticus; pars parvocell. post., pars 
parvocellularis posterior of the nucleus preopticus; rec. preopt., recessus preopti- 
cus. tr. hyp. olf. med., tractus hypothalamo-olfactorius medialis; fr. olf. thal. med., 
pars dors., tractus olfacto-thalamicus medialis, pars dorsalis; tr. olf. thal. med., 
pars vent., tractus olfacto-thalamicus medialis, pars ventralis; tr. med. preopt., 
pars ant., tractus mediano-preopticus, pars anterior; tr. preopl. sup., tractus 
preopticus superior; the connections of this tract are fully shown in the figure; 
it is apparently, Goldstein’s tract * (Taf. 11, fig. 7); tr. strio-thal. ineruc., tractus 
strio-thalamicus incruciatus; (r. fen., tractus teniae. 
