SYSTEMATIC ANALYSIS OF APPARATUS. 



77 



the nerves are probably alike, and were the nerve of 

 smell exchanged for that of sight the result would prob- 

 ably be the same as now ; or, if the termination of the 

 nerve of smell could be transferred to the ganglion of 

 sight (optic ganglion), an odorous particle acting through 

 the nose would probably produce a sensation of light. 



229. Inf. THE NUMBER OF GANGLIA need not be so 

 great as that of the nerves, nor greater than that of the 

 kinds of sensations classed according to the causes pro- 

 ducing them. 



Appetites & their satisfaction. 



Satiety & Repose. 



Ennui & Exhilaration. 



Fatigue & Rest. 



Disease & Health (normal and 



abnormal). 

 Muscular Sense. 

 Touch. 

 Taste. 

 Smell. 

 Sight. 

 Hearing. 



231. Six KINDS OF GANGLIA ARE EVIDENTLY NECES- 

 SARY for the production of the Special Sensations, while 

 for the General Sensations one kind may be sufficient, 

 though it is probable that several of the Appetites have 

 their peculiar ganglia. 



232. APPETITES are the sensations that signify, 

 strictly speaking, when the blood requires supplies of 

 food the demand for water being called thirst, and for 

 air a sense of suffocation. But appetite is allowed to 

 include a wider range than the demands for supplies for 

 the blood. A sensation demanding the exercise of any 

 part, having its origin in the condition and wants of the 

 physical system, is called an appetite. 



233. Inf. APPETITE FOR FOOD DIFFERS from an in- 

 clination to gratify the palate, which is merely a desire 

 to produce pleasant sensations of taste, even to the sacri- 

 fice of appetite. 



229. Relative ? Write and describe table of sensations. 231. Why are ? 

 2. What are ? 233. From what does ? 



