In Spain and Portugal are national libraries in their respective capitals, Madrid and Lisbon. The national library of Spain contains some 560,000 volumes and manuscripts, while that of Lisbon contains over 200,000. Belgium and Holland are rich in libraries. The royal library at Brussels contains over 400,000 volumes. In 1830 it was made a part of the state archives and thrown open to the public. The national library of Holland was established in 1798 by uniting the library of the princes of Orange with the smaller libraries of the defunct states. It thus became the library of the States-General, but in 1815 it was converted into the present national library. It has a very valuable collection of books, numbering over 400,000. One of the best arranged and managed libraries in Europe is the Royal Library at Copenhagen. It was thrown open to the public in 1793, and has since been conducted under national auspices. Two copies of every book published in the kingdom must be deposited in this library. Its volumes have increased very rapidly during the nineteenth century, and now number over 550,000. The Royal Library of Sweden is located at Stockholm. It contains over 350,000 valuable volumes, and is admirably arranged and conducted. The University Library at Upsala is also a very valuable one, containing 300,000 volumes. There is also an excellent library of over 100,000 volumes connected with the university at Lund. The libraries of Norway, though not so large as those of Sweden, are numerous, valuable, and well managed. The University Library at Christiana contains over 330,000 volumes. In Russia, large and valuable libraries are not numerous outside of the cities of St. Petersburg, Moscow, and Warsaw. The Imperial Library at St. Petersburg ranks as the richest in Europe, excepting the libraries of Paris and the British Museum. It is open to the public, and contains approximately 1,200,000 volumes. [Illustration: RIDGWAY BRANCH OF PHILADELPHIA LIBRARY.]