CENTURY VII. 369 



not stayed upon, but passing, is rather an increase of 

 sweetness ; as in the purling of a wreathed string ; 

 and in the raucity of a trumpet ; and in the nightin 

 gale-pipe of a regal ; and in a discord straight falling 

 upon a concord ; but if you stay upon it, it is offen 

 sive : and therefore there be these three degrees of 

 pleasing and displeasing in sounds, sweet sounds, 

 discords, and harsh sounds, which we call by divers 

 names, as skreeching or grating, such as we now 

 speak of. As for the setting of the teeth on edge, 

 we see plainly what an intercourse there is between 

 the teeth and the organ of the hearing, by the tak 

 ing of the end of a bow between the teeth, and 

 striking upon the string. 



