. The Journal of comparative neurology and psychology. ?MpstolfdctoriLLSqr$niMle ceils .terniLndiLS Fig. 4. Through the olfactory bulbs at the level of the rostral eud of thebulbulus accessorius. X 30. The layer of grauule cells is indicated by the stippled area, ventrally ofwhich is the layer of mitral cells (unimpregnated). The dorsal half of thesection is occupied by secondary olfactorj^ cells, two of which are imperfectlyimpregnated. The fibers of the lateral secondary olfactory tracts are not im-pregnated. They lie chiefly along the dorso-lateral border of the section ex-ternal to the dot
. The Journal of comparative neurology and psychology. ?MpstolfdctoriLLSqr$niMle ceils .terniLndiLS Fig. 4. Through the olfactory bulbs at the level of the rostral eud of thebulbulus accessorius. X 30. The layer of grauule cells is indicated by the stippled area, ventrally ofwhich is the layer of mitral cells (unimpregnated). The dorsal half of thesection is occupied by secondary olfactorj^ cells, two of which are imperfectlyimpregnated. The fibers of the lateral secondary olfactory tracts are not im-pregnated. They lie chiefly along the dorso-lateral border of the section ex-ternal to the dotted line. The olfactory glomeruli are limited to the extremeventral part of the section. The nervus terminalis lies still farther ventrallyclose to the meninges. Herrick, Nnvus Tcrwinalis of Frog. 185. olfdcl onus septL tnolfdctorias fore bra in bundle[at fore bra in bu^ vetitro-ldterdlis Fig. T). Through the cerebral hemisphere hetween tlie olfactory hnlh and thelamina termiualis. X 30. The lateral and medial basal forebrain bundles are impregnated and theneurones marked a and It send their axones into these two bundles tract marked tr. olfactorius incdialis contains also other elements, par-ticularly olfactoi-y fibers of the third order for the nucleus medianus ventral fibers of the lateral secondaiy olfactory tract are impregnated,but not the dorsal fibers of this tract. The nervus terminalis lies ventrallyof the median forebrain bundle and laterally of the tr. olfactorius medialis. 186 Journal of Comparative Neurology and Psychology. _,^ir olfcictorius sepii
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