We will add a few warnings to what we have just said about injections. There are times when they should be omitted,--as for instance during the periodical illness, when the body is either chilled or heated, and generally when their administration gives pain. There are also some women in whom the mouth of the womb remains open, especially those who have borne many children. In such cases, the liquid used is liable to be thrown into the womb itself, and may give rise to serious troubles. These should either omit the use of the syringe altogether, or obtain one of those which throw the water backward and not forward. This variety is manufactured and sold by various dealers. _Irrigations_ are more convenient in some respects than injections. They are administered in the following manner:--A jar holding about a gallon of water, simple or medicated, as may be advisable, is placed upon a table or high stand. A long india-rubber tube is attached to the bottom of the jar, ending in a metallic tube, and furnished with a stopcock. The patient seats herself on the edge of a chair over a basin, introduces the tube, and turns the stopcock. The liquid is thus thrown up in a gentle, equable stream, without any exertion on her part. No assistant is required, and the force and amount of the liquid can be exactly graduated by elevating or lowering the jar, or by turning the stopcock. When there is much debility, or when it is desirable to apply the liquid for a long time, this method is much preferable to syringing. The necessary apparatus can readily be obtained in any large city. It has, however, the drawback that the jar is large, and not convenient to carry on journeys. We shall close this chapter on Health in Marriage by a few words on some of the _ailments to which mothers are subject while nursing._ GATHERED BREASTS. Gathering of the breasts may occur at any time during the period of nursing, but it is most frequently met with within the first three months after childbirth, and is more common after the first than after subsequent confinements. All women are more or less liable to it, but those who are weakly, and particularly those who are scrofulous, are most prone to its attacks.