This is important reading for people engaged in the publication, evaluation and selection of children's books. Mrs. Viguers offers a collection of the speeches she has made before library groups and three of her articles from Horn Book, the magazine which she edits. These arranged under three broad headings. The title section provides a valuable source of condensed information about the history of children's books and the history of critical writing about them. A discussion of the role and responsibilities of the critic is sure to engage the attention of children's librarians, who do more active reviewing than any of the other specialists in library service. Her major premise would be difficult to refute: that the critic's primary role should be the pursuit and illumination of excellence; that the same ""margin for surprise"" which children bring to their reading should be a factor in adult evaluation of materials aimed at children. Mrs. Viguers' dismissal of children as critics, her contentions about the proper use of critical reviews in book selection, and her pronouncements on various kinds of books should, among other points, challenge her readers to a reassessment of issues in current, if not always open, controversy. The second section, The Librarians, has a lucid section on reading appetites at the various age levels. The presence of personal anecdote brings a tone of informality to the explication of the goals and standards of book services to children that should make it useful for interested parents as well as potential and practicing librarians. The Children, the final section, concerns books at Christmas and books around the world. People in or watching this field will find refreshment in this book.