To preserve and perpetuate the national literature should be among the foremost cares of the National Legislature. The library gathered at the Capitol still remains unprovided with any suitable accommodations for its rapidly increasing stores. The magnitude and importance of the collection, increased as it is by the deposits made under the law of copyright, by domestic and foreign exchanges, and by the scientific library of the Smithsonian Institution, call for building accommodations which shall be at once adequate and fireproof. The location of such a public building, which should provide for the pressing necessities of the present and for the vast increase of the nation's books in the future, is a matter which addresses itself to the discretion of Congress. It is earnestly recommended as a measure which should unite all suffrages and which should no longer be delayed. The joint commission created by the act of Congress of August 2, 1876, for the purpose of supervising and directing the completion of the Washington National Monument, of which commission the President is a member, has given careful attention to this subject, and already the strengthening of the foundation has so far progressed as to insure the entire success of this part of the work. A massive layer of masonry has been introduced below the original foundation, widening the base, increasing the stability of the structure, and rendering it possible to carry the shaft to completion. It is earnestly recommended that such further appropriations be made for the continued prosecution of the work as may be necessary for the completion of this national monument at an early day. In former messages, impressed with the importance of the subject, I have taken occasion to commend to Congress the adoption of a generous policy toward the District of Columbia. The report of the Commissioners of the District, herewith transmitted, contains suggestions and recommendations, to all of which I earnestly invite your careful attention. I ask your early and favorable consideration of the views which they express as to the urgent need of legislation for the reclamation of the marshes of the Potomac and its Eastern Branch within the limits of the city, and for the repair of the streets of the capital, heretofore laid with wooden blocks and now by decay rendered almost impassable and a source of imminent danger to the health of its citizens. The means at the disposal of the Commissioners are wholly inadequate for the accomplishment of these important works, and should be supplemented by timely appropriations from the Federal Treasury. The filling of the flats in front of the city will add to the adjacent lands and parks now owned by the United States a large and valuable domain, sufficient, it is thought, to reimburse its entire cost, and will also, as an incidental result, secure the permanent improvement of the river for the purposes of navigation.