According to the statistics of Tait, the operation results in cure of the fibroid in 95 per cent. of the cases. In some cases the bleeding stops immediately and never recurs; in other cases the bleeding continues, in steadily diminishing amount, for several weeks or a few months after the operation; and finally, in a small proportion of the cases, the bleeding is not arrested at all. The atrophy of the tumor after this operation is also variable. Sometimes the atrophy begins immediately, and in a few weeks after the operation has proceeded to a very marked degree, the tumor disappearing or being so small as to give no trouble; in other cases the atrophy is much slower; sometimes there is no arrest of growth whatever. The operation seems to produce most benefit in cases of the hard fibroid. The edematous fibroid is often unaffected by it; and it is not applicable in the case of fibro-cystic tumors, which continue in unabated growth. In performing the operation it is important that every portion of ovarian tissue should be removed, and that the Fallopian tube should be amputated as closely as possible to the uterine cornu. Many cases of failure of this operation are due to neglect of these precautions. A very small portion of ovarian tissue may be sufficient to continue menstruation. A good many women who had derived no benefit from the first operation have been subjected to a second operation, a small remaining portion of the ovary being removed or the stump of the Fallopian tube being excised, complete cure resulting. The nature of the influence of the Fallopian tube in this matter is not understood. Tait lays especial stress upon the necessity of its complete removal. The importance of the removal of the tubes may be realized from Tait’s statement that “removal of the ovaries alone is followed by immediate and complete arrest of menstruation in about 50 per cent. of the cases. Removal of both tubes, with or without the ovaries, is followed by the same arrest in about 90 per cent. of the cases.” From this statement it appears that if one wishes to stop menstruation, removal of the tubes is of even more importance than removal of the ovaries. The operation of salpingo-oöphorectomy is not advisable in some cases, and in some others it is impossible to perform it. As has already been said, the operation is likely to fail in the soft edematous fibroids. It should not be advised in the fibro-cystic tumors. It is not advisable in the case of large fibroid tumors of abdominal growth, because, even though atrophy occur, it will be slow, and the symptoms referable to the large hard tumor in the abdomen will be but slowly relieved.