A book reviewer or maker of book lists for children should have an intimate knowledge of the best books which have been written for them, and the unconscious training which this knowledge gives in good taste and a critical sense of style. He (or she) should have also the intimate knowledge of all sorts and conditions of children and their limitations that a teacher or a settlement worker or a wise mother has. More than 20 years ago, in the meeting of the American Library Association in Boston, Mrs. Kate Gannett Wells said: "I would like to have mothers prepare lists, whose headings should vary from any yet given; such as: books that make children cry; books of adventure for unexcitable and unimaginative children; unlovesick novels." The best reviews of children's books ever written in this country were the work of a woman and a mother--Lucy McKim Garrison, who, in the earlier volumes of the _Nation_, put into her work broad-mindedness, high ideals, and an understanding of children. It is such work as this that should be a model for the reviewers and a guide to the librarians of to-day, and one of the most important duties of the Children's Section is to insist upon higher standards, both in reviewers and through them in the writers of children's books, and upon trained critical knowledge in the makers of children's lists. BOOKS FOR CHILDREN: I. FICTION, II. FAIRY TALES, III. SCIENCE. It seems to have been fairly demonstrated that we have as yet no proper standard of values to guide us in the selection of children's books. Reviews fail: they either do not evaluate the book at all, or they lack appreciation of it or of the children who are to read it--or both. Book lists fail, as a rule, through eagerness to get something printed before we know what to print. Articles upon children's reading fail because the people who have written them are not always familiar with children's books or are not acquainted with the "public library child." We turn to the books themselves, but, having no standard of values, how shall we judge? How are we to know whether a book is good or poor? It is not possible to reduce the appreciation of literature--whether books for children or for all time--to an exact science. It is difficult to conceive of any formula for the evaluation of books in general or the books of a particular class which would not fail again and again when applied to the individual book through the medium of a personal judgment. We shall not attempt, therefore, to answer the questions which form the substance of our topic. We have endeavored merely to state a question which to all children's librarians seems to be of paramount importance, trusting that we may eventually reach a partial solution of this problem by bringing the thought of many minds to bear upon it.