86 GENERAL ANALYSIS. 



tation, will surprise and delight the student when he 

 studies their details. 



288. ON THE OTHER HAND, the connecting nerves 

 and the Ganglia that send influences through them must 

 be adapted to the contractions, their combinations and 

 successions. 



289. HOW THE NERVE EXERTS ITS INFLUENCE Upon 



the cell, what the essence of that influence is, or how it 

 is generated in the Ganglia, is not known ; whether it 

 is of the same nature as the influence producing sensa- 

 tion is uncertain, but it is probably different. 



290. THE NERVES THROUGH WHICH MOTION is PRO- 

 DUCED must be different from those through which sen- 

 sation is caused, because both are produced at the same 

 time. 



291. IN THE BODY, GENERALLY, BOTH KINDS OF 



NERVES ARE FOUND in the same bundle, since their out- 

 ward direction is the same ; but as they approach their 

 inner termination, their course being to different Gan- 

 glia, they separate and show their twofold character. 

 (Fig. 76.) 



292. THE CONTRACTION OF SOME PARTS BEING ASSO- 

 CIATED with several others, in the production of different 

 motions, the nerves ought to associate them with several 

 centres. 



293. Illus. THE CONTRACTIONS OF THE CHEST ARE 

 USED in simple breathing, in sneezing, in speech, and in 

 several other combinations. 



294. THE MOTORY GANGLIA MUST BE DIFFERENT 

 from the Sensatory Ganglia, since their offices are so dif- 

 ferent, and both are active at the same time. 



295. THE MOTORY MUST BE INTIMATELY ASSOCIATED 

 WITH THE SENSATORY GANGLIA, since it is often necessary 

 that the causes of sensation should excite the muscles to 

 activity without the apparent intervention of the mind. 



288. What said ? 289. Is it known ? 290. What is said - ? 291. What is 

 aid ? 292. What is said of - ? 293. Illus. 294. Why ? 295. Why ? 



