(2) _The Assignment._ How to enable each scholar to choose his book introduces one of the three problems in library management. The plan generally followed is to supply each scholar with a card bearing a number which represents the scholar. He selects from the catalogue a large assortment of books, and writes their numbers upon his card: the librarian assigns the scholar any one of the books selected, crosses it from his list, and upon another list marks the number of the book opposite the number of the scholar. The weakness of the plan is in the fact that the scholar has no means of learning from the catalogue what books are desirable; and a book desired by one may be entirely undesirable to another. Theoretically the scholar has the whole catalogue from which to choose; practically he has no choice, except the suggestion in the titles of the books. The open-shelf plan cannot be established in the Sunday school, for the room is usually too small, the time of the session is too brief, and the work of the school too important to allow interruption. In some graded Sunday schools another plan is pursued, taking from the scholar all choice, but assigning to each grade books of certain numbers, all printed upon the card of the scholar, any one of which books he may receive at any time during his stay in the grade, but each of which will fall to his lot but once. This plan demands a library of books carefully selected, and as carefully fitted to each grade in the school. But this method is apt to be unsatisfactory to the scholars, who have their own preferences among the books. The difficulties in assigning books, and disappointments of scholars in failing to obtain the books desired, is a frequent cause for the disuse of the library; and this problem has not as yet been fully solved. (3) _The Distribution._ This takes place at the close of the school, and brings in the second problem of library management. The books may be brought to the classes by the librarians, and distributed by the teachers; each scholar's book being indicated by his card placed within it. This method often causes confusion; scholars being dissatisfied with their books and leaving their classes press around the library. Sometimes they exchange books with each other. This is a simple plan as far as the two scholars exchanging are concerned, but sure to make trouble in the record of the librarian. Or each class may be dismissed in turn, and obtain its books at the library window while passing out. But this plan causes a congestion of scholars at the library, and also requires much time. To manage the distribution of books demands a strong will, coupled with a gentle manner in maintaining the library rules.