A Liinit to Evolution 293 



that an orange has been so artfully unitated as not only to 

 look like, but also to fed like an orange. Being deceived to 

 svcli an extent, when we cut it open and find its interior 

 very different from what we expected, we have, of course, our 

 intellectual perception of the fact, but we also have, as I have 

 said, a certain feeling of shock. Similarly, if the nature of 

 any object seen by us is doubtful, we may have a feeling 

 accompanying suspended action ; and if we find out that it 

 is in truth what we anticipated it to be, we may have, at the 

 instant of finding this out, another different feeling of smooth 

 end easy transition. These feelings we may distinguish as 

 feelings induced by various congruities and incongruities 

 between (1) sensations, and (2) feelings, which have become 

 associated with them. 



Thus it comes about that by the association of sensations, 

 imaginations, feelings of pleasure and pain, feelings of 

 activity and passivity, and groups of feelings corresponding 

 with the succession, extension, figure, size, unity, multiplicity, 

 motion, and rest of bodies, groups of feelings of the most 

 varied kinds come to be formed, which groups of feelings 

 correspond with a multitude of external objects which have 

 given rise to them. These groups of feelings underlie and 

 accompany our intellectual perceptions of material things 

 (as self-observation shows us), and therefore these groups of 

 feelings may not improperly be termed ' sense-perceptions.' 



The consideration of this power and habit which we have 

 of associating feelings together leads us on to yet another 

 consequence worthy of note. When a group of feelings has 

 become intimately associated with certain other sensations, 

 then upon the occurrence of those other sensations an 

 imagination of the group of feelings previously associated 

 therewith spontaneously arises in the mind, and we have 

 expectant feelings of their proximate actual recurrence. Thus 

 the sensation of a vivid Hash of lightning has come by 



