_Quickening_ is one of the most important signs of pregnancy, and occurs about the fourth or fifth month; not because the child is then first alive, but because the womb then rises higher in the abdomen, and because the child has reached a further state of development. Quickening is a proof that the woman is near half her time gone; though it may happen that the sensation is observed as early as the third or fourth month, instead of at four and a half months. In some cases women do not know the time when they quicken, as only a slight sensation is felt; this some compare to the fluttering of a bird. But a lady may at that time be faint, or giddy, or sick, though there seemed to be nothing more than a mere pulsation. Subsequently, however, the movements become stronger and more frequent. The motions of the child may be felt by a third person on placing the hand on the woman’s abdomen, especially if the person’s hand be cold. I have known one case in which, by placing my hand on the woman’s abdomen, I caused motions which simulated active movements of the child, although there was no fœtus present. INCREASED SIZE AND HARDNESS OF THE ABDOMEN is characteristic of pregnancy. Enlargement of the abdomen may be from flatulence, but such enlargement is not persistent; the belly is large one hour and small the next, and on pressing the bowels firmly, a rumbling of wind may be heard, which perhaps may move about, and on percussing (tapping) the part, a hollow sound may be elicited, as from a drum. A large abdomen may be due to fat, but there is a soft and doughy feeling that is characteristic of fat. On the contrary, in pregnancy, hardness, solidity and resistance to pressure characterize the gravid uterus, and the enlargement is not only persistent, but gradually increasing. It is true that when a very fat woman is pregnant, percussion or palpation of the abdomen may be fruitless, and any certain diagnosis cannot be made, but in most cases, if we are careful to observe these conditions, and also whether there is a distended bladder and rectum, the diagnosis can be made after the fourth or fifth month. To make an examination by percussion and palpation, let the female lie down, with the head raised and the thighs flexed on the abdomen; then examine with both hands, especially near the pubis. Pressure with the ends of all the fingers, gradually moving them upward, will enable us to detect the womb, if it rise above the symphasis, and also the size and height of the fundus.