Margaret Morley's _Song of Life_, an American book, which I have not seen, has been highly praised.

Most of these books are intended for quite young children, and while they explain more or less clearly the origin of babies, nearly always starting with the facts of plant life, they touch very slightly, if at all, on the relations of the sexes.
Mrs.Ennis Richmond's books, largely addressed to mothers, deal with these questions in a very sane, direct, and admirable manner, and Canon Lyttelton's books, discussing such questions generally, are also excellent.

Most of the books now to be mentioned are intended to be read by boys and girls who have reached the age of puberty.

They refer more or less precisely to sexual relationships, and they usually touch on masturbation.
_The Story of Life_, written by a very accomplished woman, the late Ellice Hopkins, is somewhat vague, and introduces too many exalted religious ideas.

Arthur Trewby's _Healthy Boyhood_ is a little book of wholesome tendency; it deals specially with masturbation.