Their entrances are hard and horny, and their form winding, because bodies of this kind better return and increase the sound.

This appears in the harp, lute, or horn;[237] and from all tortuous and enclosed places sounds are returned stronger.
The nostrils, in like manner, are ever open, because we have a continual use for them; and their entrances also are rather narrow, lest anything noxious should enter them; and they have always a humidity necessary for the repelling dust and many other extraneous bodies.

The taste, having the mouth for an enclosure, is admirably situated, both in regard to the use we make of it and to its security.
LVIII.

Besides, every human sense is much more exquisite than those of brutes; for our eyes, in those arts which come under their judgment, distinguish with great nicety; as in painting, sculpture, engraving, and in the gesture and motion of bodies.

They understand the beauty, proportion, and, as I may so term it, the becomingness of colors and figures; they distinguish things of greater importance, even virtues and vices; they know whether a man is angry or calm, cheerful or sad, courageous or cowardly, bold or timorous.
The judgment of the ears is not less admirably and scientifically contrived with regard to vocal and instrumental music.