The question is not free from difficulty even when the general atmosphere of the school is healthy and helpful. If one dared to leave this instruction until the age of puberty, the lad would be capable of a much deeper impression than he is at an earlier age, and the impression would be fresh just at the time at which it is most needed. In the case of boys who have come to me at nine or ten I have sometimes ventured to defer my interview for four or five years, and have found them quite uncorrupted. On the other hand, within an hour of penning these lines I have been talking to a little boy of eleven who commenced masturbation two years ago while he was under excellent home influence. One such boy may, without guilt, corrupt a whole set, for impurity is one of the most infectious as well as the most terrible of diseases. The ideal state in a school is not reached until periodical addresses on purity can be given to all with the certainty that by all they will be listened to and treated reverently and respectfully. Such addresses cannot well be made the vehicle of sex information, but they can be so constructed as to guide those to whom individual instruction has not yet been given, and to strengthen those who, spite of full instruction, periodically need a helping hand. What results may we reasonably expect from adequate and timely instruction? I have so rarely met a case in which this has been given at home that I can only infer what these results might be from the cases in which my own instruction has been given in time. In almost every instance I feel sure that the results have been beneficial, that the temptation to impurity has been little felt, and that a healthy and chaste boyhood has resulted. Canon Lyttelton writes: "The influences of school life have been found to be impotent to deprave the tone of a boy who has been fortified by the right kind of instruction from his parents." This I can well believe, for, if the schoolmaster can do much, there can be no limit to a power which has been cradled in the sanctity of home and cherished by a mother's love. This appears to be the emphatic opinion also of Dr. Dukes. Of a boy thus favoured, Canon Lyttelton writes: "He will feel that any rude handling of such a theme, even of only its outer fringe, is like the profaning of the Holy of Holies in his heart, and he will no more suffer it than he would suffer a stranger to defile the innermost shrine of his feelings by taking his mother's or his sister's name in vain. All the goading curiosity which drives other boys to pry greedily into nature's laws, in blank ignorance of their mighty import, their unspeakable depth, and spiritual unearthly harmonies, has been for him forestalled, enlightened, and purified."