Conversations dealing with the important mysteries of human nature, Obici and Marchesini were told by ladies who had formerly been pupils in Italian Normal Schools, are the order of the day in schools and colleges, and specially circle around procreation, the most difficult mystery of all.  In England, even in the best and most modern colleges, in which games and physical exercise are much cultivated, I am told that “the majority of the girls are entirely ignorant of all sexual matters, and understand nothing whatever about them.  But they do wonder about them, and talk about them constantly” (see Appendix D, “The School Friendships of Girls,” in the second volume of these Studies).  “The restricted life and fettered mind of girls,” wrote a well-known physician some years ago (J.  Milner Fothergill, Adolescence, 1880, pp. 20, 22) “leave them with less to actively occupy their thoughts than is the case with boys.  They are studiously taught concealment, and a girl may be a perfect model of outward decorum and yet have a very filthy mind.  The prudishness with which she is brought up leaves her no alternative but to view her passions from the nasty side of human nature.  All healthy thought on the subject is vigorously repressed.  Everything is done to darken her mind and foul her imagination by throwing her back on her own thoughts and a literature with which she is ashamed to own acquaintance.  It is opposed to a girl’s best interests to prevent her from having fair and just conceptions about herself and her nature.  Many a fair young girl is irredeemably ruined on the very threshold of life, herself and her family disgraced, from ignorance as much as from vice.  When the moment of temptation comes she falls without any palpable resistance; she has no trained educated power of resistance within herself; her whole future hangs, not upon herself, but upon the perfection of the social safeguards by which she is hedged and surrounded.”  Under the free social order of America to-day much the same results are found.  In an instructive article ("Why Girls Go Wrong,” Ladies’ Home Journal, Jan., 1907) B.B.  Lindsey, who, as Judge of the Juvenile Court of Denver, is able to speak with authority, brings forward ample evidence on this head.  Both girls and boys, he has found, sometimes possess manuscript books in which they had written down the crudest sexual things.  These children were often sweet-faced, pleasant, refined and intelligent, and they had respectable parents; but no one had ever spoken to them of sex matters, except the worst of their school-fellows or some coarse-minded and reckless adult.  By careful inquiry Lindsey found that only in one in twenty cases had the parents ever spoken to the children of sexual subjects.  In nearly every case the children acknowledged that it was not from their parents, but in the street or from older companions, that they learnt the facts of sex.  The parents usually imagined that