Occasionally a pedicle will be so broad that it is unsafe to trust to this simple form of ligature. Broad pedicles will require three or more ligatures. When several ligatures are required it is important to remember that the ovarian artery lies in the outer fold of the pedicle and the uterine artery at the inner end, and it is often possible to secure these vessels separately with a thin piece of silk. The pedicle can then be secured with a series of interlocking ligatures. When an ovarian tumour has undergone axial rotation and has tightly twisted its pedicle, the ligature should be applied to the torsioned area: a single ligature is then sufficient. It is impossible to frame absolute rules for ligaturing the pedicle. In this, as in all departments of surgery, common sense must be exercised, and at the present day, when ovariotomy is practised so widely, no one would think of performing this operation without assisting at, or watching its actual performance by an experienced surgeon. Having satisfied himself that the pedicle is secure, the surgeon examines the opposite ovary, and if obviously diseased it should be removed. The operator then sponges up any blood or fluid which may have collected in the recesses of the pelvis. Whilst employed in this way he gives instructions to have the dabs and instruments counted. When the operator limits the number of dabs to six he can easily have them displayed before him. The incision is sutured in the manner described on p. 9. =Cysts of the broad ligaments.= Occasionally the surgeon on opening the abdomen finds that the cyst or tumour is situated between the layers of the broad ligament. Sessile cysts of this kind are removed by what is known as enucleation. The peritoneum overlying the cyst is cautiously torn through with forceps until the cyst wall is exposed; then by means of the forefinger the surgeon proceeds to shell the cyst out of its bed, taking care not to tear the capsule or any large vein in its wall; it is also necessary to exercise the greatest care to avoid injury to the ureter. It is not uncommon, after enucleating a cyst in this way, to find the ureter lying at the bottom of the recess. (For treatment of an injured ureter see p. 112.) When the enucleation is completed the walls of the capsule are carefully examined for oozing vessels which require ligature. The capsule can often be closed in such a way as to bring its walls into apposition and thus obliterate its cavity; it then requires no further attention. When there is much oozing the capsule is treated on the plan known as marsupialization. The edges of the capsule are brought to the lower angle of the abdominal wound and secured with sutures, and a drain, either of gauze or a rubber tube, is introduced, and the remainder of the wound closed in the usual manner. Enucleation is usually accompanied by more loss of blood than simple ovariotomy; this, and the prolonged manipulation, is often responsible for severe shock.