In the hysterectomy for fibroma already considered, the mother is saved and the child's inevitable death is certainly hastened; in the caesarean section the child is most probably saved, and the mother's inevitable death is most probably hastened; we might say, in some cases, that her death is undoubtedly hastened. If in the carcinoma case here the child had no chance whatever for delivery except by the caesarean section, while the mother's death would be probably or certainly hastened, she might legitimately consent to the operation or she might legitimately refuse the operation. The child, however, has, as we said, one chance of delivery in two without the section, while the mother's death will very probably be hastened. If the mother's death would certainly be hastened by the section, her death, although it would be a circumstance and indirect, not an end nor a means, would not have counterbalanced against it necessarily the saving of the child's life, because the child has one chance in two in any event. In such an hypothesis the operation seems to be unjustifiable. If, however, the hastening of the mother's death is only probable and not certain, may we oppose that probability to the advantage that must accrue to the child through the section? If the doubt that her death will be hastened is soundly probable, the woman may consent to the operation. She risks through charity the hastening of her own death for a great {47} advantage to the child, but she may risk legitimately immediate death in major surgical operations for an advantage less than the saving of life itself. She may have her skull opened for the removal of a depressed bone that is causing paralysis, she may have her knee-joint opened for the wiring of a patella to prevent lameness, but both these operations always immediately endanger life. She may go into a burning house, jump into a river, and so on, to save her child from possible injury. AUSTIN ÓMALLEY. {48} III ABORTION, MISCARRIAGE AND PREMATURE LABOUR If pregnancy ends in the emptying of the uterus before the sixteenth week of gestation, the condition is called an abortion; if this happens between the sixteenth and the twenty-eighth weeks, it is miscarriage; if the child is born after the twenty-eighth week but before full term, the birth is premature. The term "abortion" in the popular mind carries with it the notion of criminal interference, and the word "miscarriage" is used for both abortion and miscarriage by the laity; physicians, on the other hand, commonly use the term "abortion" for both abortion and miscarriage. These conditions may occur spontaneously or they may be induced artificially.