An alkaline mouth-wash should be used several times a day; after an attack of vomiting it is always advisable to rinse the mouth with such a solution. As a wash either lime water or milk of magnesia, or a solution of bicarbonate of soda may be used; they are equally good. Lime water may be prepared at home inexpensively in the following way: Place a teacupful of builders' lime in a large bowl and add two quarts of water; thoroughly mix and allow to settle. Pour off and throw the water away, since it often contains impurities. Add two quarts of water again and allow the mixture to stand three or four hours, stirring occasionally. Strain through a piece of muslin into bottles and keep well corked. One tablespoonful of this solution should be added to a glass of water to obtain the proper strength for a mouth-wash. PRESSURE SYMPTOMS.--Because human beings walk erect, and not on all fours, they are liable to suffer from various ailments of pregnancy that quadrupeds escape. Thus the upright posture is the chief factor, at least, in causing such complaints as swollen feet, varicose veins, hemorrhoids, and cramps in the legs. The attention of patients should be called to the source of these troubles, for in most instances they can be prevented by forethought and prudence. During the last two or three months of pregnancy every prospective mother should carefully avoid being too much on her feet; she should lie down, as has already been emphasized, at regular times of day and frequently sit down to rest. Proper support for the abdomen, such as is afforded by a correct corset or a maternity supporter, lifts the pregnant uterus, and to a notable extent relieves of pressure the structures beneath it. On the other hand, incorrectly made corsets, the use of circular garters, and running a sewing machine by foot- power all aggravate the pressure symptoms of pregnancy. _Swelling of the Feet_.--So long as the swelling is confined to the feet and legs it does not mean that there is trouble with the kidneys; the swelling is satisfactorily explained by the pressure of the enlarged uterus upon the veins which pass through the lower part of the abdomen and conduct the blood from the legs on its way back to the heart. The womb is rarely heavy enough during the first half of pregnancy to interfere with the flow of blood through these vessels, but in the last few months such interference is very common. Generally the limbs are equally affected, yet occasionally the swelling is more marked on one side or the other. The characteristic changes begin in the feet. The skin covering the back of the foot becomes tense and has a waxen appearance; it is easily indented, bearing for a moment the imprint of anything that is pressed against it. Often the swelling extends no higher than the ankles, but it may involve the calves, the thighs, or even the vulva, which is the region between the thighs.