Q. Why have some animals no ears? A. Nature giveth unto every thing that which is fit for it; but if she had given birds ears, their flying would have been hindered by them. Likewise fish want ears, because they would hinder their swimming, and have only certain little holes through which they hear. Q. Why have bats ears, although of the bird kind? A. Because they are partly birds in nature, in that they fly, by reason whereof they have wings; and partly they are hairy, and seem to be of the nature of mice, therefore nature hath given them ears. Q. Why have men only round ears? A. Because the shape of the whole and of the parts should be proportionable, and especially in all things of one nature; for as a drop of water is round, so the whole water; and so, because a man’s head is round, the ear inclines towards the same figure; but the heads of beasts are somewhat long, and so the ears are drawn into length likewise. Q. Why hath nature given all living creatures ears? A. 1. Because with them they should hear. 2. Because by the ear choleric superfluity is purged; for as the head is purged of phlegmatic superfluity by the nose, so from choleric by the ears. _Of the Mouth._ Q. Why hath the mouth lips to compass it? A. Because the lips cover and defend the teeth; for it would be unseemly if the teeth were always seen. Also, the teeth being of a cold nature, would soon be hurt if they were not covered with lips. Q. Why has a man two eyes, two ears, and but one mouth? A. Because a man should speak but little, and hear and see much. And by hearing and the light we see the difference of things. Q. Why hath a man a mouth? A. 1. Because the mouth is the gate or door of the stomach. 2. Because the meat is chewed in the mouth, and prepared and made ready for the first digestion. 3. Because the air drawn into the hollow of the mouth for the refreshing of the heart is made pure and subtle. Q. Why are the lips moveable? A. For the purpose of forming the voice and words, which cannot be perfectly done without them. For, as without _a_, _b_, _c_, there is no writing, so without the lips no voice can be well formed. Q. What causes man to yawn or gape? A. It proceeds from the thick fume and vapours that fill the jaws; by the expulsion of which is caused the stretching out and expansion of the jaws, and opening of the mouth. Q. Why doth a man gape when he seeth another doing the same? A. It proceeds from the imagination. And this is proved by the similitude of the ass, who, by reason of his melancholy, doth retain his superfluity for a long time, and would neither eat nor make water unless he should hear another doing the like. _Of the Teeth._ Q. Why do the teeth only, amongst all other bones, experience the sense of feeling? A. That they may discern heat and cold, that hurt them, which other bones need not.