Even among those who hold that children ought to be instructed, there is a division of opinion as to when this instruction is to begin. Some say at puberty, others a few years later, perhaps on the eve of marriage, and yet others think that the knowledge will come with less shock, with less personal application, and therefore in a more natural and useful manner from the very beginning of conscious life. These last would argue--why put the facts of reproduction on a different footing from those of digestion and respiration? As facts in the physical life they hold a precisely similar position. Upon the due performance of bodily functions depends the welfare of the whole organism, and although reproduction, unlike the functions of respiration and digestion, is not essential to the life of the individual, it is essential to the life of the nation. The facts of physiology are best taught to little children by a perfectly simple recognition of the phenomena of life around them--the cat with her kittens, the bird with its fledgelings, and still more the mother with her infant, are all common facts and beautiful types of motherhood. Instead of inventing silly and untrue stories as to the origin of the kitten and the fledgeling, it is better and wiser to answer the child's question by a direct statement of fact, that God has given the power to His creatures to perpetuate themselves, that the gift of Life is one of His good gifts bestowed in mercy on all His creatures. The mother's share in this gift and duty can be observed by, and simply explained to, the child from its earliest years; it comes then with no shock, no sense of shame, but as a type of joy and gladness, an image of that holiest of all relations, the Eternal Mother and the Heavenly Child. Somewhat later in life, probably immediately before puberty in boys and shortly after puberty in girls, the father's share in this mystery may naturally come up for explanation. The physiological facts connected with this are not so constantly in evidence before children, and therefore do not press for explanation in the same way as do those of motherhood, but the time comes soon in the schoolboy's life when the special care of his own body has to be urged on him, and this knowledge ought to come protected by the sanction that unless he is faithful to his trust he cannot look to the reward of a happy home life with wife and children. In the case of the girl the question as to fatherhood is more likely to arise out of the reading of the Bible or other literature, or by her realisation that at any rate in the case of human parenthood there is evidently the intermediation of a father. The details of this knowledge need not necessarily be pressed on the adolescent girl, but it is a positive cruelty to allow the young woman to marry without knowing the facts on which her happiness depends.