(2.) The mouth takes in the meat, the teeth grind it for the stomach, the stomach prepares it, nature strains it through the milky veins, the liver refines it, and mints it into blood, separates the purer from the drossy parts, which go to the heart, circuits through the whole body, running through the veins, like rivers through so many channels of the world, for the watering of the several parts; which are framed of a thin skin for the straining the blood through, for the supply of the members of the body, and framed with several valves or doors, for the thrusting the blood forwards to perform its circular motion. (3.) The brain, fortified by a strong skull, to hinder outward accidents, a tough membrane or skin, to hinder any oppression by the skull; the seat of sense, that which coins the animal spirits, by purifying and refining those which are sent to it, and seems like a curious piece of needlework. (4.) The ear, framed with windings and turnings, to keep any thing from entering to offend the brain; so disposed as to admit sounds with the greatest safety and delight; filled with an air within, by the motion whereof the sound is transmitted to the brain:[105] as sounds are made in the air by diffusing themselves, as you see circles made in the water by the flinging in a stone. This is the gate of knowledge, whereby we hear the oracles of God, and the instruction of men for arts. It is by this they are exposed to the mind, and the mind of another man framed in our understandings. (5.) What a curious workmanship is that of the eye, which is in the body, as the sun in the world; set in the head as in a watchtower, having the softest nerves for the receiving the greater multitude of spirits necessary for the act of vision! How is it provided with defence, by the variety of coats to secure and accommodate the little humor and part whereby the vision is made! Made of a round figure, and convex, as most commodious to receive the species of objects; shaded by the eyebrows and eyelids; secured by the eyelids, which are its ornament and safety, which refresh it when it is {a66} too much dried by heat, hinder too much light from insinuating itself into it to offend it, cleanse it from impurities, by their quick motion preserve it from any invasion, and by contraction confer to the more evident discerning of things. Both the eyes seated in the hollow of the bone for security, yet standing out, that things may be perceived more easily on both sides. And this little member can behold the earth, and in a moment view things as high as heaven.