The idea at the beginning was that the groups should be made up of fifteen children, but later we adopted ten as a better number. So the family in which a library was placed would have the books always within reach, and a handful of children from the same tenement-house or near neighborhood would have access to the books at the time set for their exchange, and when a group had extracted the juice from one set of books we would send them another. It was understood at the start that the children outside of the librarian's family should exchange their books only once a week. I dropped in on the children when I could, but soon saw that the effectiveness of the work would be increased by regular weekly meetings of each group. As it would be impossible for me to visit them all myself, volunteers were sought to take charge each of a single library. Quickly the visitors began to come to me with all manner of puzzles--how to get the children to keep their hands clean, how to induce them to read thoroughly, what to do for a child who was ill, or a lad who was playing truant. Out of these interviews with individual visitors grew naturally the thought of a monthly conference of the visitors; and from an early period in the history of the libraries we have met once a month, except during the summer, and spent an hour and a quarter in discussing a great variety of questions, some general and some particular, that arise in connection with the libraries. I must dwell a moment on the selection of books. The aim was to put really good literature into the hands of the poor in such a way that they would grow to love that literature. People, after all, are not so unlike. A really good book, a book that is human, that touches our sense of rugged reality, or the fancy or imagination which is native to us and as real as anything in us, is sure of a welcome among all classes of people, if it is couched in intelligible terms. I chose some books that I happened to have read myself, but soon coming to the end of the list of which I was perfectly sure, and finding it impossible to review enough books myself, I secured the volunteer help of a number of ladies who understood the children of the poor and knew how to pass judgment on books proposed for their reading. It was definitely understood that every book should be read by the reviewers from cover to cover. We would not depend upon advertisements, hearsay, or vague recollections of books read by ourselves years ago, but every book should be read from beginning to end with the immediate question in view of the admission of the book to the little libraries to be read by the poor in the homes of the poor. Publishers and book-dealers sent us books for examination. Upon a careful consideration of the written reviews of the volunteer readers, prepared according to certain canons, was based the decision as to their acceptance or rejection. It seemed clearly not worth while to take to the poor books not