heavens and earth, distinguish the infinite varietyes of colours, we perceive and know the magnitude, figure, number, proportion, site, motion and rest of all bodyes. The eyes have a pyramidall figure whose basis is without, but the Cone or point within at the opticke nerves. Nature would have them contained in a hollow circle, that so by the profundity and solidity of the place they might be free from the incursions of bruising and hurtfull things.
They are composed of six muscles, five coats, three humors, and a most bright spirit, (of which there is a perpetuall afflux from the braine) two nerves, a double veine, and one artery, besides much fat, and lastly a Glandule seated at the greater angle thereof, uppon that large hole which on both sides goes to the nose, and that, lest that the humours falling from the braine should flow by the nose into the eyes, as we see it fares with those whose eyes perpetually weep, or water, by reason of the eating away of this glandule, whence that affect is called, the Fistula lachrymalis, or weeping Fistula.
But there is much fat put between the muscles of the eye, partly that the motion of the eyes might be more quick, in that slipperines of the fat, as also that the temper and complexion of the eyes, and chiefly of their nervous parts, might be more con∣stant and lasting, which otherwise by their continuall and perpetuall motion would be subject to excessive drynesse. For nature, for the same reason hath placed Glan∣dules flowing with a certaine moisture, neere those parts which have perpetuall agitation.