66 GENERAL ANALYSIS. 



L70. Inf. IT WILL REQUIRE MUCH EXPERIENCE of- 

 tentimes to decide upon the kind and locality of disease 

 from the character of pains that a patient will describe, 

 and the places where he will perceive and locate them. 



171. THE ORGANS AT THE OUTER EXTREMITIES OF 

 THE SPECIAL SENSATORY NERVES have special sensatory 

 uses, need special names, and are called Organs of Sense 

 as a collective name. (Observe that this expression 

 differs from Organs of Sensation and from Sensatory Or- 

 gans. Organ of sense is the technical name of one kind 

 of the Organs of Sensation.) 



172. THE ORGANS OF SENSE, with one exception, are 

 found at the surface of the Body, ready to catch the in- 

 fluences that objects around can exert directly or indi- 

 rectly. 



173. THE NUMBER OF KINDS OF ORGANS OF SENSE, 

 and their essential characteristics, and of course the 

 number of special Sensatory Apparatuses, can be deter- 

 mined by again noticing the characteristics of external 

 objects, and comparing them with what is necessary to 

 produce sensations. 



ORGANS OF SENSE OF HEARING. 



1 74. WAVE'S OF AIR HAVE three characteristics, force, 

 quality, and pitch, and different objects produce waves 

 that differ in some or all of these respects, some in an 

 exceedingly minute, and some in a great degree. 



175. FOR THE MIND TO LEARN THE CHARACTER OF 

 OBJECTS and enjoy them, it is necessary it should have 

 the means of distinguishing all the different degrees of 

 force, quality, and pitch that objects produce. 



176. EACH WAVE POSSESSES in some degree all its 

 three characteristics ; a single organ therefore must be 

 so constituted as to receive a wave, and cause it to exert 

 its three influences, through three kinds of parts, upon 

 three kinds of nerves connected with three kinds of 



170. What ? 171. What have ? 172. What are ? 173. How determine ? 

 174. What ? 175. What necessary ? 176. What does ? 



