Rudolf Sommer, in a paper entitled "Maedchenerziehung oder Menschenbildung ?" (_Geschlecht und Gesellschaft_, Jahrgang I, Heft 3) recommends that the first introduction of sex knowledge to children should be made by talking to them on simple natural history subjects; "there are endless opportunities," he remarks, "over a fairy-tale, or a walk, or a fruit, or an egg, the sowing of seed or the nest-building of birds." Canon Lyttelton (_Training of the Young in Laws of Sex_, pp.

74 et seq.) advises a somewhat similar method, though laying chief stress on personal confidence between the child and his mother; "reference is made to the animal world just so far as the child's knowledge extends, so as to prevent the new facts from being viewed in isolation, but the main emphasis is laid on his feeling for his mother and the instinct which exists in nearly all children of reverence due to the maternal relation;" he adds that, however difficult the subject may seem, the essential facts of paternity must also be explained to boys and girls alike.

Keyes, again (_New York Medical Journal_, Feb.

10, 1906), advocates teaching children from an early age the sexual facts of plant life and also concerning insects and other lower animals, and so gradually leading up to human beings, the matter being thus robbed of its unwholesome mystery.

Mrs.Ennis Richmond (_Boyhood_, p.