180 OP T«E FUNCTIONS OF 



SECT. XlL 



OF THE FUNCTIONS OF THE NERVOUS SYSTEM- 

 IN GENERAL^ 



i 



197. "We now come to the other class of functions 



termed animal (83> II.), by which the body and raind 



are connected. They hare obtained their name from 



existing iri animal systems only, and from enjoying: a 



greater range tliarf those foroperly denominated Vital. 



1!&. The principal organs of these functions are the 

 flrani, nYedulia spinalis, afld the nerves, the greater part 

 of which originate rMri the two former.* Tt&'j may 

 Be pr'opcrly referred tb rw"d classes, sensorial and rWfc- 

 i-ons: the former comprehending all exceptin<r the nerves 

 and their immediate origin, — all that serves more di- 

 rectly as the connection between the office of the nerves 

 and the faculties df tffe raina". 



199. Upon this division rests the beautiful observa- 

 tion of the illustrious Sommerringf respecting the cor- 

 respondence between the relative size of each class 

 with the faculties of the mind, — That the smaller the 

 nerves are, compared with the sensorial class, the greater 

 is the developement of the mental faculties. In this 

 sense, man has the largest brain of all animated beings, 



* Eustachius, tab. xviii. fig. 2. 



T Diss. tU basi eurrphali. Getting. 1778. 4to. p. 17. Also his work, already 

 quoted, upon the anatomy of the negro. •">!' sq. 



J. Gotter. Ebel, Observationa neurologic* cjc mtatome comparator Traj, ad: 

 Vhulr. 1768. 8vo. 



