THE COMPOSITION OF MIND 



sented to consciousness, seem to be severally 

 simple and distinct in kind.^ 



Throughout this remarkable analysis ques- 

 tions are suggested which can be completely 

 answered only when physics and chemistry, as 

 well as physiology and psychology, are much 

 more advanced than at present. Yet there are 

 three important principles which we may regard 

 as established in the case of sound, and as clearly 

 indicated in the case of the other sensations. The 

 first is, that sensations which are apparently 

 simple and elementary, and which cannot be 

 analyzed by mere observation of consciousness, 

 are nevertheless compounded of many succes- 

 sive and simultaneous sensations, which are 

 themselves compounded of still lower psychical 

 affections. The second is, that two sensations, 

 which differ only in th-e mode in which their 

 elements are compounded, may appear in con- 

 sciousness as generically different and irreducible 

 to each other. The third is, that two or more 

 psychical affections which, taken separately, are 

 as non-existent to consciousness, may, neverthe- 

 less, when taken together, coalesce into a sen- 



^ [The progress of Experimental Psychology has now ren- 

 dered this paragraph antiquated. Both the empirical details 

 regarding the skin sensations and the theory of their relations 

 to the organs of sensation have entered upon a new stage since 

 the discovery of the ** temperature points " in 1884 (by Blix, 

 Goldscheider, and Donaldson).] 

 189 



