242 SENSES OF INSECTS. 



really seven senses; which he divides into those that 

 are altogether physical, and those that are more con- 

 nected with the intellect. The first of these divisions 

 contains four senses, touch, love, taste, and smell; 

 the second three, hearing, sight, and the internal sense 

 of thought, or the brain a . That he is right in adding 

 love to the list seems *to me evident, because it is as 

 distinct from touch, as smelling and taste are. With re- 

 gard to the other, though it may be expected that there 

 should be a transitive sense connecting the intellect (if I 

 may so speak) with the external organ of sense, and as 

 a medium by which the former can receive the notices 

 of the external world furnished by the latter ; yet it seems 

 improper to make the entire brain itself a sense. We 

 know that the agent between the common sensory and 

 the sense is the consciousness or perception of the im- 

 pression. " Seeing we may see and not perceive, and 

 hearing we may hear and not understand." The picture 

 may be painted upon the retina of the eye, the sound 

 may strike upon the tympanum of the ear ; but neither 

 the one nor the other be received by the intellect, unless 

 the internal power or faculty of perception be in action 

 and mediate between them. This is what I mean by 

 the internal sense, which, to use a term of Mr. W. S. 

 MacLeay's b , is osculant between intellect and sense, or 

 forms the transit from one group of powers to the 

 other. 



Of the ordinary senses, sight holds the first rank : it 



a N. Diet. tfHist. Nat. xxx. 584. 

 b Hor. Entomolog. 37. 



