5. _Mirault’s operation_ (Figs. 51 A and B) consists in entirely removing the inner margin of the cleft, whilst on the outer side a flap is turned down by cutting from above downwards, commencing at or near the apex and extending to the junction of the middle and lower thirds where it remains attached. Care must be taken to make this flap sufficiently thick. It is then carried horizontally across the cleft and applied to the opposite margin, and the raw surfaces sutured together. The same objection may be raised to this as to some of the above-mentioned operations, viz. the implantation of integumental tissue in the continuity of the mucous membrane of the lip, resulting probably in an irregularity of the red margin. [Illustration: FIG. 51.—Mirault’s operation. Outer side of cleft margin implanted on prepared surface of inner side.] 6. _König’s operation_ is more satisfactory, and not unlike the one I usually employ (Fig. 46). It consists in paring both margins of the cleft, and in then forming two small prolabial flaps by horizontal incisions parallel to the lip margin. 7. _Stokes’s operation._—In this a prolabium is formed by tissue from both sides of the cleft by means of incisions skirting the red margin of the lip, as seen in the drawing (Fig. 52, _ab_, _a′b′_). The upper part of the cleft is not completely pared on either side, but the knife is only carried three quarters of the way through the thickness of the lip, the mucous membrane remaining intact. These partially dissected flaps are turned back, and the edges of the skin brought into apposition, whilst the prolabial flaps are drawn downward and outward. As regards the latter part of this proceeding, it will be seen that my own plan is much the same, but the necessity for leaving the tissue at the back of the lip does not appear to possess any advantage commensurate with the greater difficulty that its presence entails in the accurate adaptation of the flaps. [Illustration: FIG. 52.—Stokes’s operation. Prolabium formed by flaps _ab_, _a′b′_ from each side; margins of cleft partially detached, and flaps K B _ab_, K B _a′b′_ turned backwards to increase breadth of raw surface. (_Mason._)]