TIME AND MANNER OF IMPREGNATION. CAUSES WHICH DETERMINE THE SEX OF A CHILD. EFFECTS OF TOO EARLY SEXUAL INTERCOURSE. POSITION DURING SEXUAL INTERCOURSE. DISPOSITION AND INTELLECT HOW FORMED. THE TEMPERAMENTS HOW DISTINGUISHED. THE NATURAL LAWS OF MARRIAGE, AND OF THE TEMPERAMENTS. ON THE INFLUENCE OF VITAL FORCE. THE ALSO, RULES FOR BY JAMES ASHTON, M. D. NEW YORK: |