THE INFERIOR VERMIFORM PROCK . 779 



PARTS OF THE INFERIOR VERMIFORM PROCESS (fig. 285). On Lower worm 

 Ihe inferior vermiform process there are seen, from behind forwards lucludes 

 first, a small eminence, comprising seven or eight narrow trans- 

 lamime which unite the posterior inferior and gracile lobes of 

 'the two sides and is named the tuber ralvulce : next, a larger, tongue- tuber 

 (shaped projection, which serves as a commissure to the biventral 



and is called the }>i/r<n,n<] : and then a narrow elongated pyramid 

 -the ti.riila, at the anterior extremity of which is the rounded nodule, 

 ^prominence of the nodule. 



The uvula is connected to the amygdaloid lobe 011 each side by 

 |a grey strip named the furrowed band, and the nodule to the furrowed 

 j flocculus by a thin white lamina the inferior medullary velum, but 11 



see these parts the following dissection must be made. 



Dissection. The biventral and gracile lobes are to be sliced oft* Dissection 

 on the left side, so that the amygdaloid lobe may be everted from 

 the valley. By this proceeding the stalk of the flocculus is 

 exposed, and is seen to be continued into the thin and soft white 

 layer of the inferior medullary velum, which joins the nodule 

 internally. The furrowed band is also exposed on the side of the 

 uvula. 



The inferior medulla ry fdunt is a thin white layer which forms a inferior 

 commissure to the flocculi, and is connected to the upper surface of *jjjj| lary 

 the nodule in the middle. Its exposed part on each side, between 

 the flocculus and the nodule, is semilunar in shape, and the anterior 

 edge is free ; but behind, it is continued into the medullary centre 

 >f the cerebellum (fig. 274). 



The fnrroir-.-d bund is a narrow ridge of grey matter, notched on Furrowed 

 the surface, which passes from the side of the uvula to the con- b 30 * 1 - 

 stricted base of the amygdaloid lobe. It lies along the attached 

 post.-rior margin of the inferior medullary velum. 



STRUCTURE OF THE CEREBELLUM. The interior of the cerebellum Cerebellum 

 consists of a large white m&ss the medullary centre, from which awSt? f 

 offsets proceed to the laminae and to other parts of the encephalon. medullary 

 The medullary centre is surrounded, except in front, where the 

 processes to other parts of the brain (peduncles of the cerebellum) 

 issue from it, by a superficial layer of grey substance the cortex of and grey 

 th>j cerebellum ; and other small masses of grey matter are embedded co 

 in it. 



Strii.rf.iin- of the lamiiice. The laminae are seen, in the section that 

 has been made of the separate cerebellum or of the under part of 

 the left hemisphere, to consist of a grey external portion enveloping and white 

 a white centre (fig. 277, p. 765). The grey matter is subdivided 

 into two layers, the superficial of which is lighter and clear, while 

 the deeper stratum is darker and of a rust colour. The white part 

 is derived from the medullary centre, which sends off numerous 

 processes to the lobes and the bodies composing the worm, and 

 . dividing like the branches of a tree, end in small offsets 

 which enter the several laminae. 



Dissection. For the purpose of seeing the medullary centre, 

 with its contained corpus dentatum, remove all the laminae from 



