Woman, from the nature of her organization, has less strength and endurance than man. Much, however, of the suffering and misery which she experiences arises from insufficient attention to the sexual organs. The menstrual function is generally established between the ages of twelve and fourteen. For want of proper instruction, many a girl through ignorance HAS caused derangements which have enfeebled her womanhood or terminated her life. At this critical period the mother cannot be too considerate of her daughter's health. Preceding the first appearance of the menses, girls usually feel an aching in the back, pains in the limbs, chilliness, and general languor. The establishment of this function relieves these symptoms. Every precaution should be taken during the period to keep the feet dry and warm, to freely maintain a general circulation of the blood, to avoid exertion, and to refrain from standing or walking too much. Menstrual derangements should never be neglected, for they predispose to affections of the brain, liver, heart, and stomach, induce consumption and frequently end in death. Young women should, therefore, properly protect themselves, and avoid extremes of heat and cold. * * * * * CHAPTER V. PRACTICAL SUMMARY OF HYGIENE. 1. The first step which should be taken for the prevention of disease, is to make provision for the health of the unborn child. Greater care should be exercised with women who are in a way to become mothers. Those who are surrounded by all the luxuries which health can bestow, indulge too much in rich food, and take too little exercise; while the poor get too little nourishment, and work too hard and too long. A woman in this condition should avoid over-exertion, and all scenes which excite the passions or powerful emotions. She should take moderate exercise in the open air; eat moderately of wholesome food, and of meat not oftener than twice a day; take tea or coffee in limited quantities, and avoid the use of all alcoholic liquors; she should go to bed early and take not less than nine hours sleep; her clothing should be loose, light in weight, and warm. She should take every precaution against exposure to contagious or infectious diseases.