We are well aware that excellent work has been done for children during the past ten years in many other museums, and perhaps the first beginning in this direction was made by the Children's Room in the Smithsonian Institution in Washington. The American Museum of Natural History in New York City provides an instructor to explain some of its beautiful and interesting exhibits to children, and a similar work has been done in the Milwaukee Museum. Children have been made especially welcome in other museums, such as those at Charleston, S. C., St. Johnsbury, Vt., and the Stepney Borough Museum in London. All librarians are so familiar with the excellent work done in the Children's Departments of public libraries, which have developed so rapidly in almost every town and city throughout the country during the past decade, that it is not necessary to refer at length to them. Suffice it to say, that the work of the Children's Museum and its library are quite different in plan and scope from any of the museums and libraries to which reference has been made. Before describing in detail the work of this unique little museum, it may be of interest to know something of the early history of an institution which had its origin in connection with the first free library in Brooklyn. As long ago as August, 1823, a company of gentlemen met together to discuss the question of establishing a library for apprentices in the "Village of Brooklyn." Shortly after, the "Apprentices' Library Association" was organized "for the exclusive benefit of the apprentices of the village forever." The library was first opened in a small building on Fulton street, on Nov. 15, 1823, On the Fourth of July, 1825, the corner-stone of a new library building was laid, on which occasion General Lafayette took part in the formal exercises. It is interesting to note that a year or two later, courses of lectures in "natural philosophy" and chemistry were given for the benefit of members; and the early records tell us that in illustrating a lecture on electricity the instructor, "Mr. Steele, showed a metallic conductor used by Dr. Franklin in making experiments." Later, lectures on astronomy were given for the benefit of readers, and drawing classes established for a similar purpose. A few years later the Library Association sold its building and removed to Washington street, where it remained for a long period of years. In 1843, the Association was reorganized under the name of the Brooklyn Institute, and privileges were extended to "minors of both sexes," the library being called at that time the "Youth's Free Library." At the same time the custom was established of awarding premiums to readers on Washington's Birthday. Silver medals and prizes of books were given for the best essays upon geography, natural history, hydraulics, architecture, and history, as well as the best pieces of workmanship and most accurate mechanical drawings presented by readers.