The greatest width of the face at the line of the eyes is equal to the distance from the roots of the hair in front to the parting of the lips. [Footnote: There are, with this section, two sketches of eyes, not reproduced here.] 321. The nose will make a double square; that is the width of the nose at the nostrils goes twice into the length from the tip of the nose to the eyebrows. And, in the same way, in profile the distance from the extreme side of the nostril where it joins the cheek to the tip of the nose is equal to the width of the nose in front from one nostril to the other. If you divide the whole length of the nose--that is from the tip to the insertion of the eyebrows, into 4 equal parts, you will find that one of these parts extends from the tip of the nostrils to the base of the nose, and the upper division lies between the inner corner of the eye and the insertion of the eyebrows; and the two middle parts [together] are equal to the length of the eye from the inner to the outer corner. [Footnote: The two bottom sketches on Pl. VII, No. 4 face the six lines of this section,--With regard to the proportions of the head in profile see No. 312.] 322. The great toe is the sixth part of the foot, taking the measure in profile, on the inside of the foot, from where this toe springs from the ball of the sole of the foot to its tip _a b_; and it is equal to the distance from the mouth to the bottom of the chin. If you draw the foot in profile from the outside, make the little toe begin at three quarters of the length of the foot, and you will find the same distance from the insertion of this toe as to the farthest prominence of the great toe. 323. For each man respectively the distance between _a b_ is equal to _c d_. 324. Relative proportion of the hand and foot. The foot is as much longer than the hand as the thickness of the arm at the wrist where it is thinnest seen facing. Again, you will find that the foot is as much longer than the hand as the space between the inner angle of the little toe to the last projection of the big toe, if you measure along the length of the foot. The palm of the hand without the fingers goes twice into the length of the foot without the toes. If you hold your hand with the fingers straight out and close together you will find it to be of the same width as the widest part of the foot, that is where it is joined onto the toes. And if you measure from the prominence of the inner ancle to the end of the great toe you will find this measure to be as long as the whole hand. From the top angle of the foot to the insertion of the toes is equal to the hand from wrist joint to the tip of the thumb. The smallest width of the hand is equal to the smallest width of the foot between its joint into the leg and the insertion of the toes. The width of the heel at the lower part is equal to that of the arm where it joins the hand; and also to the leg where it is thinnest when viewed in front.