This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ... HOW NATURE WORKS IN A BOY AT about the fifteenth year of his age, the average boy begins to develop into manhood. There is a rapid growth of his framework, of his muscles, of his lungs, heart and digestive system. There is an equally rapid development of his mental powers. He sees things differently. ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ... HOW NATURE WORKS IN A BOY AT about the fifteenth year of his age, the average boy begins to develop into manhood. There is a rapid growth of his framework, of his muscles, of his lungs, heart and digestive system. There is an equally rapid development of his mental powers. He sees things differently. Nature is building a home-builder. Nature is equipping the young man with powers which will enable him to establish a home and to support and protect the inmates of that home. These physical and mental changes are the most apparent ones, and far the most important Incidental changes are the growth of the beard, and the change of voice. Biologists and physiologists have for decades been seeking the immediate cause of these profound changes. Their investigations have been finally rewarded in the recent discovery that these profound and far-reaching changes in the young man's body and mind are produced by a substance prepared in the sez glands. It was discovered that the testicles of the developing boy rapidly increase in size at the very beginning of his growth into manhood, becoming about eight times as large as they were before this adolescent development began. One would naturally expect that such a remarkable development in the size of the sex glands would bear an important relation to the general development. It has been discovered that it is the cause of that development. If a boy of ten or twelve were deprived of his testicles through castration he would grow into a slope-shouldered, narrow-chested, flabby- muscled, beardless, squeaky-voiced, 'namby- pamby mollycoddle. On the other hand, if a girl of eight or ten were to be deprived of her ovaries she would develop into a square- shouldered, deep-chested, ...
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