. The Journal of comparative neurology and psychology. Fig. 4. Transection tbrongh the rostral part of the cerebral beuusi)beresof a 50 cm. carp. Weigert metbod. X 21 (Zeiss couip. oc. 8, obj. A* witbtbe pointer at lU. Reduced to tbree-fiftbs). Sliows tbe nervns terminalisl)artly imbedded in tbe tractus olfacto-lobaris medialis wbicb it bas passedtbrougb dorso-laterad. Compare its location in Fig. 3. Note tbat tbe n. lies Itetween tbe tr. olf. lob. med. and tbe rad. olf. med. prop.; n. terminalis; irid. olf. hit., radix olfactoria lateralis; nul. olf. vied,prop., radix o
. The Journal of comparative neurology and psychology. Fig. 4. Transection tbrongh the rostral part of the cerebral beuusi)beresof a 50 cm. carp. Weigert metbod. X 21 (Zeiss couip. oc. 8, obj. A* witbtbe pointer at lU. Reduced to tbree-fiftbs). Sliows tbe nervns terminalisl)artly imbedded in tbe tractus olfacto-lobaris medialis wbicb it bas passedtbrougb dorso-laterad. Compare its location in Fig. 3. Note tbat tbe n. lies Itetween tbe tr. olf. lob. med. and tbe rad. olf. med. prop.; n. terminalis; irid. olf. hit., radix olfactoria lateralis; nul. olf. vied,prop., radix olfactoria medialis projiria ; 1r. olf. loh. med., tractus olfacto-lobaris medialis; tr. istrio-tlial., tractus slrio-tbalamicus. Shrldon, Nervus Tennnialis in the Carp. 199. Fig. 5. Transection through the hemispheres of a carp 50 cm. long, Im-mediately rostrad of the anterior commissure. Weigert method. X 21 (Zeisscomp. DC. 8, obj. A*, with the pointer at 10. Reduced to three-fifths). Showsthe nervus terminalis separated from the tractus olfacto-lobaris medialispreparatory to its decussation, com. interiiilb., commissura interbulbaris;11. term., nervus terminalis; rail. olf. lat., radix olfactoria lateralis; tr. mecl., tractus olfacto-lobaris medialis; tr. strio-tlial., tractus strio-thalamicus. 200 Journal of Comparative Neurology and Psychology. --Lmedian cau\tv^ ^ j-^^^-^^j-w-teft-^ n Te r m. ^H^l V. ii^ ^:^.V^-/itrr olf loir. med. *j^ %feom interuulLr. Fig. 6. Transection through the rostral part of the anterior commissureof a carp about 35 cm. in length. Ramon y Cajal method. X 156 (Zeisscomp. oc. G, obj. 8 nnn. Reducecl to two-thirds). Shows the entire decussa-tion of the nervus terminalis of the right side and part of that of the
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