In seeking the best means of imparting sanitary instruction to youth we find that a certain preparation is necessary before anything like a full and direct hygienic education can be given. This preparation must be laid in childhood. A knowledge of the structure and functions of the human body is indispensable; yet young women generally shrink with repugnance from physiological instruction for which they have not been prepared. All reference to bodily functions is unpleasant to them. They have never learned to respect the laws of their organization, and they turn from the subject of physical structure as very repugnant, or a great bore. The tastes of children, however, are of a very different character; the intellect, as shown in untiring curiosity and incessant questioning, is predominant in childhood, and taste for any study may then be formed. Children will receive the elements of comparative and human anatomy and physiology, learn to handle bones and examine structure, not only without disgust, but with extreme interest; and they may thus be prepared for the fuller instruction which they should receive as youths. Everything should be done to cultivate the taste for natural history and science that is latent in almost every child. Their fondness for animals indicates this taste, and the care of animals should be encouraged and directed. The manual of physiology in every schoolroom should be pleasantly written, well printed, and with abundant illustrations. Bright, well-drawn pictures, clean and fresh specimens, shelves and little boxes for collections, should be provided.