The instruments, ligatures, gauzes, solutions, dressing, etc., for coeliotomy are multitudinous, and all must be sterile, or the woman will be killed by septicaemia even if the hemorrhage is stopped. It is almost impossible to keep a set of instruments and the other things used in a coeliotomy always sterile and ready for instant use. The skin surface of the patient's abdomen must be sterilised, or pus infection will get into the peritoneum through the wound. In all ordinary coeliotomies this surface is carefully sterilised by a long process the night before the operation, a protective dressing is put on, and the sterilisation is repeated the next day just before the operation. This is so important that its voluntary omission is malpractice. In the hurried operation for tubal rupture there would be no time for sterilisation of the abdominal skin surface, and probably no time to sterilise the instruments and other things used, especially the surgeon's hands. The surgeon to do any coeliotomy needs assistant physicians--one to anaesthetise the patient, and at the least one other to work with him in the operation. He should have three or four physicians and one or two nurses. He can not do a coeliotomy alone. Hence the patient in a ruptured {32} extrauterine pregnancy must have at the very least two physicians within call. The woman, then, in Case II. before operation has one chance in three of life if no operation is done until the child is viable, and if she remains alive till the child is viable (when she must be operated upon) her chances for life will be no better, judging from modern statistics. At any moment, therefore, she is in actual peril of death by two chances in three, and probably more if all special circumstances are considered. The foetus is a materially unjust aggressor in this case before rupture or other similar mishap, as it was in Case I., but not to the same extent. In Case II. it is a materially unjust aggressor as two is to three; in Case I. it is a materially unjust aggressor as three is to three. If a lunatic is just about to fire three cartridges at me, I may know the chances are only two in three, or even only one in three, that he will hit me fatally, nevertheless I may licitly kill him to stop the firing and save my life. The mother in Case II. is in exactly similar danger of life. The objection that the danger to my life from the action of the lunatic exists _hic et nunc_ and that the danger to the mother's life does not threaten _hic et nunc_, is not of any weight. She is in actual danger _hic et nunc_, even while the surgeon is in the room examining her. Moreover, the matter of time here is accidental. If you give a man a poison that may kill him in ten hours, or one that may kill him in ten days, the action is essentially the same.