We are about to approach a topic of vital importance, therefore, in summing up as briefly as may be, the precautions necessary to attain this end. They can most conveniently be divided into those to be observed during the monthly changes, and those more general rules of health to be obeyed in the intervals of the periods. PRECAUTIONS DURING THE MONTHLY CHANGES. At the head of all cautions and warnings which we could give about the care of the health at these monthly periods, we put _rest_, _rest_, bodily and mental. _Do less than usual_, we say to all, whether the necessity for it is manifest or not. Over-exertion is a most fruitful cause of disease. Long walks, shopping, dancing, riding, hard work whether for pleasure or profit, should be avoided to the utmost. The advantages of rest cannot be over-estimated. A striking example of it occurs to our mind. Most readers are aware how toilsome are the lives of the Indian women among our Western tribes, and also how singularly easy and almost painless is their child-bearing. The pangs of travail are almost unknown to them. The cause of this has puzzled even physicians. We can tell them. It is because it is an inviolable, a sacred rule among all those tribes, for the woman, when having her monthly sickness, to drop all work, absent herself from the lodge, and remain in perfect rest as long as the discharge continues. Traces of this wide-spread custom among primitive people, extended themselves, are discoverable among civilized lands. The famous general council of the Christian Church held at Nice in the fourth century, passed a rule disapproving of women coming to church at the times of their menstrual sickness. The cold and dampness of large edifices, the mental excitement and its unfavourable effects and the exertion requisite for long walks to and fro, would justify this rule on purely hygienic grounds, and such may have caused its adoption. A moderate and uniform temperature favors health at such epochs; while exposure to heat or cold, and the drinking freely of iced water or stimulants should be shunned. The popular belief that bathing is hurtful, is correct so far as either cold or hot baths are concerned; but it is well to know, in the interests of comfort and cleanliness, that a moderately warm-bath, about 80° Fahr., _will do no injury_. Such a bath can be taken without any hesitation. We sanction, also, another well-known rule, and that is, that no purgative medicine should be taken immediately before or during the change. If called for by some other disorder, a mild laxative is all that should be administered, unless by the direction of a physician. PRECAUTIONS IN THE INTERVALS OF THE MONTHLY CHANGES.