viii THE HTND-BEAIN 423 



belluin is interesting, because it is reasonable, as Bolk showed in 



V.cac. 



B 



Fir,. 222. Views of upper (A) and lower (B) surfaces of Imman cerebellum. Natural size. From 

 photographs. (Sriiafer.) The plate also shows Bolk's divisions into lobules, in different colours. 

 The light yellow is Bolk's anterior lobe ; dark yellow, simple median lobule on upper surface, 

 and posterior median lobule on lower surface of cerebellum; the red shows the two lateral 

 lobules which Bolk calls .um^oinc/ of which the deeper red tonsils and flocculi also form 

 part. In A : ?.c., lobulus centralis ; n.l.c., ala lobuli centralis ; m, culmen monticuli ; J.m., 

 lobus culminis ; d., clivus ; ?.<?., lobus clivi ; l.cac., lobus cacuminis ; l.t., lobus tuberis ; s.p.-c., 

 suk-iis post-centralis ; s.pr.-d., sulcus pre-clivalis ; s.p.-d., sulcus post-clivalis ; f.li.,f.h., lissura 

 horizontalis magna. In B: I, lingula ; I.e., lobus centralis ; a.l.c., all lobuli centralis; s.p.-c., 

 sulcus post-centralis ; r.rn.s., velum rnedullare superius ; p.s.c., pedunculus cerebelli superior ; 

 p.c., pedunculi cerebelli medius et inferior ; n., nodulus ; r.m.i., velum medullare inferius ; p.fl., 

 pedunculus flocculi; rf., flocculus ; ., uvula; n/n., amygdala; >py, pyramis ; l.lii:, lobus 

 biventralis; 1. 1:, tuber valvulae sen posticum; l.t., lobus postero-inferior ; /.f/)'. 1 , lobulus 

 niacilis anterior : ?."/.-, lobulus -lacilis ].st>-i ior ; s.pr.-gr,, sulcus pre-gracilis ; s.i.-qr., suleus 

 intra-gracilis : s.p.-gr., sulcus post-gracilis ; f.li., tissura horizontalis ma-na. The vallecula has 

 been somewhat opened out to display the parts of the lower worm. 



his masterly work on the Mammalian Cerebellum, 1904-6, by 



2 E i 



