dividing the septum into two layers from one end of the white line to the other. From each extremity of this first incision a cut is made, running forward, and another running backward, the whole series of incisions representing the letter H. The forward incisions will mark the outer boundaries of the vag¬ inal flap, and their length will determine the length of the new perineum. It will generally suffice for these incisions (which are carried along the line at the sides of the vulva where skin

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... and mucous membrane meet, or, to be more exact, where the skin alters in character) to be made to terminate