512 



THE RABr.IT 



The dieucephalon consists nf a right and Xith optic tlialamits 

 (o. til.) between which is the sht-like third ventricle (if') 



p.va 



c.rs. 



Fn;. y,!. Two (lisstciioiis of ilie Raliljil's lnain, from al.m'e (nat. si/e). In A, tlie 

 left hcmispliere is dis^itcted down to the levtl of tlic corpus callosuni ; on the 

 riglil side tlie lateral ventricle is e.vposud. In 1!, the hemispheres are dissected 

 ilnUNi to a little below the level of the anterior eiul <.'f the corpus callosiuii ; only 

 the frontal luhe of ihe left hemisphere is retained, of the right a portion of the 

 temporal lobe also is left ; the choroid plevus ?\.\-\<\ pineal body are remo\'ed, as 

 well a.s the greater part of the body of the fornix and the whole of its left posterior 

 pillar ; the cerebellum is removed with the excepiion of a part of its right lateral 

 lobe with the flocculus. 



n. CO. anterior commissure ; n./o. anterior [lillar of forniv ; n. pji. anterior peduncles 

 of cerebellum ; I'./o. hud>' o{ forjii.x ; c/d. ceiUral lobe of cerebellum ; cb~. its 

 lateral lobe ; f.,^«. elevation on the uptic ihakimns ; t:/;. cerebral hemisphere; 

 ch. //. part of choroid ple.xus ; c/k cl. corpus callosum ; cp. x. corpus striatum ; c. rs. 

 and d. />. elevations on the bidb ; //. flocculus ; /i/>. ni. hippocampus ; tii.co. middk' 

 rem miss tire ; o. /'. o. /-. iiplic lobes ; o/f. olfacti ir\ lobe ; o. ill. optic thalamus ; o. 

 l:. o|ilic tra(_l (conliinialion of cliiasnia) ; /.(<'. posterior conmiissurc ; p.fo. 

 posterior pillar of fornix ; /'//. pineal body ; /<ti.f>>i. its peduncle ; f'.pn. pusterior 

 peduncles of (■erebellum ; /, fa. fibres of pons Varolii forming middle peduncle-^ 

 ofcerebellum ; s/<. In. septiim lucidum ; st. I. line on corpus callosum ; /. .^'. band 

 of white matter lying beneath choroid plexus ; ?'. I'n. \al\e of Vieussens; 7'^. 

 third ventricle ; v^. fonrlh ventricle. (From I^ark'-r's /oofoiny.') 



rooft-cl ovlt I)\' a thin nid-nihranc, on the ii})])L'r surface ofwhich 

 is a vascular dun'oid ple.xus (Fig. 132, vL ip), and from the 



