Amongst the organs of these sensations the chief are double, to preserve to one side what the other might happen to be defective in by any accident.  These two organs of the same sensation are symmetrically placed either on the forepart or on the sides, that man may use them with more ease to the right or to the left or right against him—­that is to say, towards the places his joints direct his steps and all his actions.  Besides, the flexibility of the neck makes all those organs turn in an instant which way soever he pleases.  All the hinder part of the head, which is the least able to defend itself, is therefore the thickest.  It is adorned with hair which at the same time serves to fortify the head against the injuries of the air; and, on the other hand, the hair likewise adorns the fore part of the head and renders the face more graceful.  The face is the fore part of the head, wherein the principal sensations meet and centre with an order and proportion that render it very beautiful unless some accident or other happen to alter and impair so regular a piece of work.  The two eyes are equal, being placed about the middle, on the two sides of the head, that they may, without trouble, discover afar off both on the right and left all strange objects, and that they may commodiously watch for the safety of all the parts of the body.  The exact symmetry with which they are placed is the ornament of the face; and He that made them has kindled in them I know not what celestial flame, the like of which all the rest of nature does not afford.  These eyes are a sort of looking-glasses, wherein all the objects of the whole world are painted by turns and without confusion in the bottom of the retina that the thinking part of man may see them in those looking-glasses.  But though we perceive all objects by a double organ, yet we never see the objects double, because the two nerves that are subservient to sight in our eyes are but two branches that unite in one pipe, as the two glasses of a pair of spectacles unite in the upper part that joins them together.  The two eyes are adorned with two equal eyebrows, and, that they may open and close, they are wrapped up with lids edged with hair that defend so delicate a part.

Sect.  XXXIX.  Of the Forehead and Other Parts of the Face.

The forehead gives majesty and gracefulness to all the face, and serves to heighten all its features.  Were it not for the nose, which is placed in the middle, the whole face would look flat and deformed, of which they are fully convinced who have happened to see men in whom that part of the face is mutilated.  It is placed just above the mouth, that it may the more easily discern, by the odours, whatever is most proper to feed man.  The two nostrils serve at once both for the respiration and smell.  Look upon the lips:  their lively colour, freshness, figure, seat, and proportion, with the other features, render the face most beautiful.  The mouth, by