The outline of the front of the arm commences at the point (33), by a gentle concavity at the arm-pit, and then swells out in a convex curve over the biceps, reaching (34), where it becomes concave, and passing through (35), again becomes convex in passing over the long supinator, and, becoming gently concave as it passes the radial extensors, rises slightly at (36), and ends at (37), where the outline of the wrist commences. The outline of the back of the arm commences with a concave curve at (38), which becomes convex as it passes from the deltoid to the long extensor and ends at the elbow (39), from below which the outline follows the convex curve of the extensor ulnaris, reaching the wrist at the point (40). It will be seen that the various undulations of the outline are regulated by points which are determined generally by the intersections and sometimes by directions and extensions of the lines of the diagram, in the same manner in which I shewed proportion to be imparted, in a late work, to the osseous structure. The mode in which the curves of (¹⁄₂), (¹⁄₃), (¹⁄₄), (¹⁄₅), and (¹⁄₆) are thus so harmoniously blended in the outline of the female figure, only remains to be explained. The curves which compose the outline of the female form are therefore simply those of (¹⁄₂), (¹⁄₃), (¹⁄₄), (¹⁄₅), and (¹⁄₆). Manner in which these curves are disposed in the lateral outline (figure 1, Plate XIX.):— Points. Curves. Head from 1 to 2 (¹⁄₂) Face ” 2 ” 3 (¹⁄₃) Neck ” 3 ” 4 (¹⁄₅) Shoulder ” 4 ” 6 (¹⁄₆) ” ” 6 ” 8 (¹⁄₄) Trunk ” 9 ” 15 (¹⁄₄) ” ” 21 ” 24 (¹⁄₂) Outer surface of thigh and leg ” 15 ” 20 (¹⁄₆) Inner surface of thigh and leg ” 25 ” 30 (¹⁄₆) Outer surface of the arm ” 8 ” 33 (¹⁄₆) Inner surface of the arm ” 9 ” 36 (¹⁄₆) Manner in which they are disposed in the outline (figure 2, Plate XIX.):— Points. Curves. Front of neck from 1 to 2 (¹⁄₆) ” trunk ” 2 ” 10 (¹⁄₄) Back of neck ” 16 ” 18 (¹⁄₆) ” trunk ” 18 ” 23 (¹⁄₄) ” ” ” 23 ” 25 (¹⁄₃) Front of thigh and leg ” 11 ” 13 (¹⁄₄) ” ” ” ” 13 ” 15 (¹⁄₆) Back of thigh and leg ” 25 ” 32 (¹⁄₆) Front of the arm ” 33 ” 37 (¹⁄₆) Back of the arm ” 38 ” 40 (¹⁄₆) Foot ” 0 ” 0 (¹⁄₆)