The Effect of the Study of the Scientific Branches.-- A knowledge of the laws of nature is essential to health; hence the necessity for the study of the natural sciences-- anatomy, physiology, chemistry, physics, and zoology. Aside from the intrinsic value of this knowledge, it is almost universally conceded that these studies develop the judgment; and no one will have the temerity to deny that a lack of judgment must undermine the health as well as the success and happiness of the individual. Industrial Education.-- When it is considered how intimate are the relations between the physical and the psychic states, and how often the psychic condition leads to actual disease, and that often of the most incurable type, it needs no demonstration that a mental occupation which will take the woman out of herself is a physical necessity. Therefore when the girl has reached the subjective limit of her intellectual education,-- that is, when she has reached the limit of her capacity or taste,-- it is essential to her physical well-being that she should turn her attention to some industrial occupation. This may be housekeeping or any other occupation for which she has taste or talent. A healthy mental occupation is an absolute necessity to prevent the individual from becoming self-centered. And to become self-centered is the first step on the certain road to chronic invalidism. A most important part of an education is the knowledge of how to procure the most perfect development of the body possible, and how to maintain the health. This has not been touched upon here, since the outlines for the general physical education have already been given in "Hygiene and Physical Culture for Women,"* and the present volume concerns itself only with the four critical epochs of woman's life. * By Anna M. Galbraith, M. D.; published by Dodd, Mead & Co. With this broad view of an education, as a means to procure the best physique possible; a mind disciplined to meet to the greatest advantage all the vicissitudes of life; an intellect developed along the lines of its greatest possibilities; and an occupation chosen in accordance with the tastes and talents of the individual; it becomes an incontrovertible fact that the education is the controlling factor in the physical life of every woman. _________________________________________________________________ "Be not simply good; be good for something." THOREAU. _________________ PART I.-- MAIDENHOOD. _________________ CHAPTER I. PUBERTY. Sexual Development; Age of Puberty; Physical Changes at Puberty; First Onset of Menstruation; Psychic Changes at Puberty. "Self-reverence, self-knowledge, self-control, These three alone lead life to sovereign power." -- "OEnone."