In operating for the removal of a gravid tube in the early weeks, the surgeon may be exercised in his mind in regard to the opposite tube, for a careful study of the literature of this subject clearly shows that the patient is liable to conceive in the opposite tube, and in some instances this has happened within a few weeks of the removal of its fellow. The liability of a repeated tubal pregnancy may be fixed at 5 per cent. Moreover, in operating for tubal pregnancy, the opposite tube should be carefully examined, because both tubes may be gravid, though, as a rule, the pregnancies are of different dates. To spare a woman a recurrence of tubal pregnancy it has been urged that the surgeon should remove the opposite tube, but men of ripe experience and judgment are averse to such a proceeding, for it is an established fact that uterine pregnancy is not uncommon after unilateral tubal gestation. My own experience is in harmony with this. In some cases of unilateral tubal abortion the operator has cleared out the tubal mole and clot, and left the tube. This is not good practice: I think a tube which has once been pregnant should be removed. If the opposite tube is obviously diseased, and this happens in a small proportion of patients, it should be removed. The method of dealing with the sac of an extra-uterine gestation after the fifth month depends in a great measure upon whether the fœtus is alive or dead. The gestation-sac after this date consists usually of the expanded tube closely incorporated with the tissues of the broad ligament, which may be thick in some parts and very thin in others. To the walls of the sac, coils of the intestine, and particularly the rectum, adhere. Experience decides that the safest plan, after exposing the gestation-sac through an abdominal incision, is to cut into it and remove the fœtus and placenta. When the fœtus is dead there will be little trouble from the placenta. The edges of the incision are stitched to the margin of the abdominal wound and drained. In those rare cases where the amnion erodes the tube and invades the belly (ventral pregnancy), the gestation-sac, with its contents, has been successfully removed by merely transfixing its base with silk ligatures.