_Appendix_, 3 375 In describing the scale of sounds made in pronouncing the five vowels, _vol._ 2. _p._ 239. it ought to have been mentioned, that the letter _i_ must be pronounced as in the word _interest_, and other words beginning with the syllable _in_; the letter _e_ as in _persuasion_; and the letter _u_ as in _number_. The reference intended, _vol._ 2. _p._ 419. is to _p._ 404. of the same volume. INTRODUCTION. The five senses agree in the following particular, that nothing external is perceived till it first make an impression upon the organ of sense; the impression, for example, made upon the hand by a stone, upon the palate by sugar, and upon the nostrils by a rose. But there is a difference as to our consciousness of that impression. In touching, tasting, and smelling, we are conscious of the impression. Not so in seeing and hearing. When I behold a tree, I am not sensible of the impression made upon my eye; nor of the impression made upon my ear, when I listen to a song[1]. This difference in the manner of perception, distinguishes remarkably hearing and seeing from the other senses; and distinguishes still more remarkably the feelings of the former from those of the latter. A feeling pleasant or painful cannot exist but in the mind; and yet because in tasting, touching, and smelling, we are conscious of the impression made upon the organ, we naturally place there also, the pleasant or painful feeling caused by that impression. And because such feelings seem to be placed externally at the organ of sense, we, for that reason, conceive them to be merely corporeal. We have a different apprehension of the pleasant and painful feelings derived from seeing and hearing. Being insensible here of the organic impression, we are not misled to assign a wrong place to these feelings; and therefore we naturally place them in the mind, where they really exist. Upon that account, they are conceived to be more refined and spiritual, than what are derived from tasting, touching, and smelling. The pleasures of the eye and ear being thus elevated above those of the other external senses, acquire so much dignity as to make them a laudable entertainment. They are not, however, set upon a level with those that are purely intellectual; being not less inferior in dignity to intellectual pleasures, than superior to the organic or corporeal. They indeed resemble the latter, being like them produced by external objects: but they also resemble the former, being like them produced without any sensible organic impression. Their mixt nature and middle place betwixt organic and intellectual pleasures, qualify them to associate with either. Beauty heightens all the organic feelings, as well as those that are intellectual. Harmony, though it aspires to inflame devotion, disdains not to improve the relish of a banquet.