Fox many years the author has been receiving re quests to write an elementary sex book, presenting the various sex problems which are of importance to man and boy, and to woman and girl, from his point of view. You are condemning the existing sex books. How would you impart sex knowledge to the average male and female 1 This was the substance of many questions. I have given my answer in Sex Knowledge for Men, published several months ago, and in the present volume. This contains the minimum of What every woman and girl should know' regarding their sex. Those women — and men — who want more knowledge on the subj ect of sex may consult the author's 'woman: Her Sex and.