[Illustration: UNIMPREGNATED FEMALE FORM.] THE BOOK OF NATURE; CONTAINING INFORMATION FOR YOUNG PEOPLE WHO THINK OF GETTING MARRIED, ON THE PHILOSOPHY OF PROCREATION AND SEXUAL INTERCOURSE; SHOWING HOW TO PREVENT CONCEPTION AND TO AVOID CHILD-BEARING. ALSO, RULES FOR MANAGEMENT DURING LABOR AND CHILD-BIRTH. BY JAMES ASHTON, M. D. Lecturer on Sexual Physiology, and Inventor of the “Reveil Nocturne.” NEW YORK: PUBLISHED BY WALLIS & ASHTON, 243 GRAND STREET. 1861. INDEX TO CONTENTS. Abortions and Miscarriages 61 Abortions, how produced 62-63 Aphrodisiacs 63 Child-getting, how to avoid 38 Clitoris, the 19 Conception, modes of preventing 38 Conception, signs of 55 Conception, how to avoid 25 Coverings for the Penis 41 Drugs to destroy the Semen 12-40 Ergot of Rye 62-64 Fallopian Tubes 15 Female Generative Organs 13-14 Female Private Parts 18 Fœtus, development of the 31 Fœtus, size and position of 33 Hymen, the 17 Impregnation 24 Impregnation, manner of 26 Intellect, how formed 48 Labor and Child-birth 55 to 60 Longevity, causes of 53 Love Powders 63 Male Generative Organs 5 Management at difficult Births 60 Marriage, natural laws of 50 Miscarriages 61 Nymphomania 27 Orgasms of a Female 35 Ovaries of a Female 13 Ova, expulsion of the 14 Ovum, or Egg 13 Penis, the 7 Penis, malformations of the 8 Pregnancy, how to detect 54 Semen, the 10