468 



ZOOLOGY 



SKCT. 



Nervous System. — The neural cavity, as in the Pigeon, con- 

 tains the central organs of the cerebro-spinal nervous system — 

 the hrdin and spinal cord. The brain (Figs. 1094-1090) of the 

 Rabbit contains the same principal parts as that of the Pigeon, 



u 



iu| IV |V |vni| x XI i 

 p.r. vi vii ix xii 



Fio. 1094.— Lepus cuniculus. Brain. ^, dorsal, 5, ventral, C, lateral view. h.o. olfactory 

 bulb ; cb' , nitdian Icjbe of cerebellum (vermis) ; ch". lateral lobe of cerebclhira ; cr. crura 

 cerebri ; ep. epiphysis ;/. b. parencephala ;/: p. longitudinal fissm-e ; li.b. cerebellum ; hp. hypo- 

 physis ; m. b. mid-brain (corpora quadrigemina) ; md. medulla oblongata ; p. v. pons Varolii ; 

 i — xii, cerebral nerves. (From AVicdersheim's Coviparative Anatomy.) 



with certain differences, of which the following are the most 

 important. 



The surface of the cerebral hemispheres or parencephala (Fig. 

 1094,/. h., Fig. 1095, ch.), which are relatively long and narrow, 

 presents certain depressions or sulci, which, though few and in- 



