=Rules.=—It should be remembered that rules and discipline are for the moral benefit of the children even more than for the protection of the library and it is wise to make rules only as they are found necessary, but once made, let them be enforced. The key note of successful discipline is sympathy with child nature. Through personal, persistent work a desired atmosphere of order becomes to a great extent established and obedience to unwritten laws a habit, although each individual case requiring discipline may require individual treatment, children being individuals. Problems of racial temperament and social education, depending on the classes of society with which one is dealing, enter largely into all phases of library work. One working with children has many opportunities to become an influence for good in their lives by way of little courtesies and obedience to laws of order and fairness, which are taught as a matter of course. Rules governing fines for overdue and damaged books must be decided according to the policy of individual libraries. It is not good for children to feel that a fine can be outlawed; better remit it for sufficient reasons or try the plan of allowing them, in certain cases, to work out the fine,—a plan which has been found satisfactory in some libraries. A damaged book should never be passed without notice. =Books for children.=—The great purpose of library work with children is to attract the children to books: satisfying individual needs and demands, and guiding their reading. Hence, the two most important requisites for the children’s librarian are a knowledge of children and of books, and if there is but one thing she can do by way of preparation for this work, let it be that of becoming acquainted with a few children’s books representative of various types. Nothing can take the place of first hand knowledge of the books and of intelligence in placing the right book in the hands of the right child at the right time.