=The physical effects.=--Perhaps the most noticeable effects of this vice are to be found in the physical system. The eyes become hollow and lusterless, complexion sallow, cheeks haggard, lips and ears pale, muscles soft and flabby, the breasts shrink, the bodily form is stooped and weak. Every time the life-giving blood is caused by this sin to rush in undue quantities to these organs, it returns to the heart with less of life and more impurities. Such girls will grow up to be weak, puny women and will suffer from dyspepsia, consumption and nervous troubles. If you have learned to misuse these organs, you must determine that you will never do it again. By keeping the mind pure and never abusing these organs you will develop a healthy and perfect body, a bright and cheerful mind, a charming, winning personality, and live to be useful and happy. =Two letters from young women.=--From a large number of letters received from young ladies who have heard the author’s lectures or read his books, the following letters are added to this chapter. A big-hearted man in Canada gave 500 copies of Perfect Manhood to that number of young men. Fortunately, a young woman who was greatly in need of help, read one of these books. These letters tell the sad story of thousands, whom the author is anxious to help. =First Letter.=-- ----M--, CANADA. _Dear Professor:_ You will doubtless be surprised at receiving a letter from a young lady of twenty-seven, on a very delicate subject. Recently, I read one of your books, “Perfect Manhood,” presented by a friend to my brother. It was a great revelation to me. I wish I could have read it when I was twelve. When eleven, I was taught the secret sin by older girls. I continued the habit until I read your book. I never received one word of instruction about this vice from parents, teachers, or physicians. When twenty, I became an invalid. For one year I was placed in a hospital and treated by eminent specialists. I improved much. When I was twenty-four, my mind failed me and I was placed in a private institution. I am now very gloomy, despondent and I constantly dread a return of mental trouble. I will greatly appreciate the favor if you can give me some additional advice and help. Please help me if you can. Most sincerely, ---- Some four times a year, for three years, I received a letter from her. For eighteen months her letters indicated a hard-fought battle, small victories and a strong determination to win out. Each succeeding letter indicated greater victories. In her last letter she assured me that her womanhood had been restored and that she was entertaining a marriage proposition from a worthy and very superior young man. _Professor T. W. Shannon, City._ DEAR SIR: I heard your lecture this afternoon and am now going to write for help and advice. First, I shall tell you the story.