Properly connected with the subject of generation are the signs of pregnancy. Dr. Dewees remarks that "our experience furnishes no certain mark by which the moment conception takes place is to be distinguished. All appeals by the women to particular sensations experienced at the instant should be very guardedly received, for we are certain they cannot be relied upon; for enjoyment and indifference are alike fallacious. Nor are certain nervous tremblings, nausea, palpitation of the heart, the sensation of something flowing from them during coition, etc, more to be relied upon." Burns, however, says, "Some women feel, immediately after conception, a peculiar sensation, which apprises them of their situation, but such instances are not frequent, and generally the first circumstances which lead a woman to suppose herself pregnant are the suppression of the menses;" a fickle appetite, some sickness, perhaps vomiting, especially in the morning; returning qualms, or languor in the afternoon; she is liable to heartburn, and to disturbed sleep. The breasts at first often become smaller and sometimes tender; but about the third month they enlarge, and occasionally become painful. The nipple is surrounded with an aureole or circle of a brown color, or at least of a color sensibly deeper or darker than before. She loses her looks, becomes paler, and the under part of the lower eyelid is often somewhat of a leaden hue. The features become sharper, and sometimes the whole body begins to emaciate, while the pulse quickens. In many instances particular sympathies take place, causing salivation, toothache, jaundice, etc. In other cases very little disturbance is produced, and the woman is not certain of her condition until the time of quickening, which is generally about four months from conception. It is possible for a woman to mistake the effects of wind for the motion of the child, especially if they have never borne children, and be anxious for a family; but the sensation produced by wind in the bowels is not confined to one spot, but is often felt at a part of the abdomen where the motion of a child could not possibly be felt. Quite as frequently, perhaps, do fleshy women think themselves dropsical, and mistake motions of the child for movements of water within the abdominal cavity. The motion of the child is not to be confounded with the sensation sometimes produced by the uterus rising out of the pelvis, which produces the feeling of fluttering. At the end of the fourth month, the uterus becomes so large that it is obliged to rise out of the pelvis, and if this elevation takes place suddenly, the sensation accompanying it is pretty strong, and the woman at the time feels sick or faint, and in irritable habits; even a hysterical fit may accompany it After this the morning sickness and other sympathetic effects of pregnancy generally abate, and the health improves.