FUNCTIONS OF RELATION NERVOUS SYSTEM. 



45 



volutions. The nervous matter of the outside is gray, 

 the interior is white. 



The cerebellum is in the lower back portion of the 



FIG. 24. 



cmg 



MEDIAN LONGITUDINAL SECTION THROUGH HEAD AND UPPER PART OF NECK, 



TO SHOW RELATION OF BRAIN TO CRANIUM AND SPINAL CORD (Original 



drawing from a preparation in the Anatomy Rooms at Surgeons' Hall, 

 Edinburgh). C, cerebrum ; cb, cerebellum ; sc, spinal cord ; spc, spinal 

 column ; mo, medulla oblongata, passing through foramen magnum into 

 the spinal cord; pv, pons Varolii ; cp, cerebral peduncles, or crura cerebri; 

 cqa, anterior corpora quadrigemina ; cqp, posterior corpora quadrigemina ; 

 pg, pineal gland ; pb, pituitary body ; cc, corpus callosum, divided trans- 

 versely ; /, fornix ; mg, marginal gyrus ; gf, gyms fornicatus ; cmg, calloso- 

 marginal sulcus; O, occipital lobe; po, parieto-occipital fissure; cf, calca- 

 rine fissure ; dm, dura mater, separating cerebrum from cerebellum. 



skull, and is separated from the cerebrum by a trans- 

 verse fold of the dura mater. Instead of convolutions 



