Still, all these differences are unessential; in principle the academic libraries are alike in the New and Old Worlds. The great difference between Europe and America begins with the libraries which are not learned, but which are designed to serve popular education. The American public library which is not for science, but for education, is to the European counterpart as the Pullman express train to the village post-chaise. The scientific libraries of Boston, including that of Harvard University, contain nearly two million printed works; but the largest library of all is distinct from these. It is housed on Copley Square, in a renaissance palace by the side of the Art Museum, and opposite the most beautiful church in America. The staircase of yellow marble, the wonderful wall-paintings, the fascinating arcade on the inner court and the sunlit halls are indeed beautiful. And in and out, from early morning till late evening, week-day and Sunday, move the people of Boston. The stream of men divides in the lower vestibule. Some go to the newspaper room, where several hundred daily newspapers, a dozen of them German, hang on racks. Others wander to the magazine rooms, where the weekly and monthly papers of the world are waiting to be read. Others ascend to the upper stories, where Sargent's famous pictures of the Prophets allure the lover of art, in order to look over more valuable special editions and the art magazines, geographical charts, and musical works. The largest stream of all goes to the second floor, partly into the huge quiet reading-room, partly into the rotunda, which contains the catalog, partly into the hall containing the famous frescoes of the Holy Grail, where the books are given out. Here a million and a half books are delivered every year to be taken home and read. And no one has to wait; an apparatus carries the applicant's card with wonderful speed to the stacks, and the desired book is sent back in automatic cars. Little children meanwhile wander into the juvenile room, where they find the best books for children. And everything invites even the least patient reader to sit down quietly with some sort of a volume--everything is so tempting, so convenient and comfortable, and so surpassingly beautiful. And all this is free to the humblest working-man.