NERVOUS SYSTEM OF VERTEBRATA. 



Fig. 25. Fig. 26. 



131 



A lateral view of the Spinal Marrow. &c.. of 

 a new-born infant, to show the lateral fascicu- 

 lus, which is then more apparent. 1, crura 

 cerebri ; 2, 3, 4, one of the hemispheres of the 

 cerebellum; 5, external fasciculus of the crus 

 cerebelli; 6, lobulus amygdaloicles and nervi 

 pneumogastrici : 7, point where the lateral 

 column of the spinal marrow enters the cere- 

 bellum; 8, pons varolii; 9, 10, 11, continuation 

 of 7, or of the lateral fasciculus all the way 

 down the spinal marrow in the new-born in- 

 fant it is very nearly white, whilst the matter 

 around is of a light gray ; 12. emminentia oli- 

 varia; 13. corpora pyramidal: a; 14. corpus res- 

 ti forme. 



A posterior view of the medulla spinalis. with tin- 

 fasciculi of the corpora restiformia cut off from each 

 side of the calamus scriptorius. From the top of this 

 section as far as the lumbar portion of the medulla spin- 

 alis these posterior fasciculi have been dissected out 

 down to the axis of the medulla. 1, the pineal gland ; 

 2, the tubercula quadrigemina: 3, origin of the 4th pair 

 of nerves ; 4, the valve of the vieussens turned up a 

 little; 5. posterior portion of the crus cerebri ; 6. section 

 of the crus cerebelli; 7, anterior portion of the crus 

 cerebri; 8, section of the corpus restiforme on one side ; 

 9, the corpus restiforme untouched on the other side ; 10. 

 a prominent lateral fasciculus on the floor of the calamus 

 scriptorius; 11. point of the calamus from its point to 

 the end of the medulla spinalis are seen the junctions 

 of the fasciculi of each side, which make the axis of the 

 medulla spinalis ; 12, the lateral fasciculus ; 13, the en- 

 largement for the axillary nerves; 14, 

 for the lumbar nerves. 



