The abdominal walls are often distended beyond what the woman is able to bear without inconvenience, as the skin may become inflamed and crack. It is much more common that the true skin beneath the epidermis cracks, and, although the outside is not altered, there often remains upon the abdomen of women who have had children a number of small marks, or little whitish streaks. CHAPTER II. ABORTION. If a premature expulsion of the fœtus occur before the end of the seventh month, it is called an _abortion_, or _miscarriage_; subsequent to this period, premature labor. The cause of abortion may be in the ovum or in the mother, and it is more liable to occur at the beginning of each month corresponding to the menstrual period. The maternal causes may arise from the condition of the mother or may be accidental; may be anything that injuriously affects the mind or body. Debility of constitution, consumption, leucorrhœa, uterine irritation, febrile complaints, and obstinate constipation may be causes, but some women who are weak or sick retain the ovum with wonderful tenacity. Blows, falls, violent concussions, excessive or sudden exertions, straining, severe coughing, taking long walks, riding on horseback, or over rough roads in a carriage, a long railway journey, fright, sudden shocks, anger, joy, sorrow, good or bad news suddenly told, taking a wrong step in ascending or descending stairs, lifting heavy weights, violent drastic purgatives, calomel, dancing, and tight lacing may excite the uterus to action and effect the expulsion of its contents. It is an unfortunate thing for a woman if she miscarry with her first and second child, for it often becomes a habit. Having once miscarried, she is more likely to miscarry again, and by repeated miscarriages her constitution is broken, and the chances of her ever having a living child become very small. A woman may experience some _threatening or warning symptoms of miscarriage_ for one or two days before those of labor supervene. There is usually a feeling of languor or weariness, of lassitude and depression of spirits, and a sense of uneasiness, and then, after these premonitory symptoms have lasted for some time, there may be a discharge of mucus or blood from the vagina. The show may increase to flooding, and soon there may be pain, at first slight and irregular, afterwards of a grinding character, and subsequently severe, irregular, and bearing down. At this stage we may be quite certain that the pains will continue to recur until the fœtus at least, if not the afterbirth, have passed into the vagina.