The prognosis when complicated with pregnancy is of course more grave, but experience has demonstrated the practicability of complete and normal gestation. Conception will not often occur where these growths have attained any great size, but may sometimes. Of the nine cases which I have met and had an opportunity to follow, not one has been attended with abortion or premature labor. In one the pregnancy seems to have been protracted at least four weeks. The foetus was in a state of decomposition, and had probably been dead four or five weeks before labor began. What is not less remarkable also is that labor did not seem to be seriously affected in but one case, and in that the difficulty was easily overcome by turning. Until lately there were several supposititious sources of danger at the time of confinement--viz. inefficient uterine contractions, and consequent tedious or impracticable labor, and after expulsion or artificial removal of the foetus dangerous hemorrhages from the same cause; also, the possibility of the placental connection being made at the site of the tumor, with the imperfect closure of the sinuses that was supposed to follow. Reports of cases occurring within the last few years, while they have not completely swept away the grounds for such apprehensions, prove that the accidents so greatly feared do not in fact occur. Chadwick reports a case where the placenta was attached to the mucous membrane over the tumor, yet the placenta was spontaneously expelled and there was no considerable hemorrhage. The efficiency of the expulsive efforts were not materially affected in any of the cases I have attended. And this is what we might expect, because conception and gestation would not be perfect where there is not a sufficiency of healthy mucous membrane, upon which a normal decidua could be formed, and of fibrous structure to permit the hypertrophy of gestation. The apprehension of obstruction from the tumor lying in such a position as to intercept the expulsion of the foetus is not often realized; for those in the cervix, either pendulous or otherwise, are pressed out of the external parts in advance of the head, while those in the body and fundus are lifted up into the abdominal cavity, where there is plenty of room. It must indeed be rare that the tumor becomes impacted in the pelvis so as to interfere with the passage of the foetus. Neither does the puerperal condition seem to be rendered materially more dangerous in consequence of the presence of these tumors.