PLATE 6 
EXPLANATION OF FIGURES 
25 Transection through the rostral portion of the left cerebral hemisphere, 
slightly caudal to fig. 24. Toluidin blue method. 46. 
26 Cells of the nucleus medianus. Toluidin blue method. X 575. From 
transection. This nucleus is characterized by the arrangement of the cells in 
small, closely packed groups as shown in the figure. Compare fig. 25. 
27. Oblique longitudinal section through the hemispheres showing the origin 
of the centrifugal fibers of the tractus olfactorius ascendens. Golgi method. 
x 9. The section is much nearer the frontal than the sagittal plane, as is shown 
by the inclusion of both olfactory crura, a portion of both optic nerves and much 
of the anterior commissure. 
com. ant., Commissura anterior; corp. precom., n. med., corpus precommis- 
surale, nucleus medianus, this latter is the rostral end of the group of cells called 
‘lobus olfactorius posterior, pars medialis’ by Goldstein; ‘areaolfactoria posterior 
medialis’ and ‘epistriatum’ by Kappers (’06); ‘area praecommissuralis septi’ 
by Kappers and Theunissen (’08); ‘ganglion mediale septi’ by Gaupp (’99) and 
‘paraterminal body’ by Elliot Smith (’03); crura olf., erura olfactoria; f. endorh., 
fissura endorhinalis; hyp., hypophysis; n. opt., nervus opticus; mucl. olf. dors., 
nucleus olfactorius dorsalis; nucl. olf. lat., nucleus olfactorius lateralis; palaeostr., 
palaeostriatum; s. lim. tel., sulcus limitans telencephali; s. ypsil., fur. ant., suleus 
ypsiliformis, furea anterior, the fovea endorhinalis interna of Kappers; tr. olf. 
asc., tractus olfactorius ascendens; tr. olf. med., tractus olfactorius medialis. 
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