preserved on either side, that is, the right and the left, so that foot answers to foot, hand to hand, and even finger to finger, so that each agrees in perfect equality with each; and also eye to eye, and ear to ear, which not only are suitable to and matched with each other, but also are formed fit for necessary uses. The hands, for instance, are so made as to be fit for work; the feet for walking; the eyes, protected with sentinel eyebrows, to serve the purpose of sight; the ears so formed for hearing, that, like a cymbal, they vibrate the sound of the word that falls upon them, and send it inward, and transmit it even to the understanding of the heart; whereas the tongue, striking against the teeth in speaking, performs the part of a fiddle-bow. The teeth also are formed, some for cutting and dividing the food, and handing it over to the inner ones; and these, in their turn, bruise and grind it like a mill, that it may be more conveniently digested when it is conveyed into the stomach; whence also they are called grinders.
Chap. xxx.—Breath and blood.
"The nostrils also are made for the purpose of collecting, inspiring, and expiring air, that by the renewal of the breath, the natural heat which is in the heart may, by means of the lungs, be either warmed or cooled, as the occasion may require; while the lungs are made to abide in the breast, that by their softness they may soothe and cherish the vigour of the heart, in which the life seems to abide;—the life, I say, not the soul. And what shall I say of the substance of the blood, which, proceeding as a river from a fountain, and first borne along in one channel, and then spreading through innumerable veins, as through canals, irrigates the whole territory of the human body with vital streams, being supplied by the agency of the liver, which is placed in the right side, for effecting the digestion of food and turning it into blood? But in the left side is placed the spleen, which draws to itself, and in some way cleanses, the impurities of the blood.
Chap. xxxi.—The intestines.
"What reason also is employed in the intestines, which are
