The first of these great systems is that of fortifications, commenced immediately after the close of our last war, under the salutary experience which the events of that war had impressed upon our countrymen of its necessity. Introduced under the auspices of my immediate predecessor, it has been continued with the persevering and liberal encouragement of the Legislature, and, combined with corresponding exertions for the gradual increase and improvement of the Navy, prepares for our extensive country a condition of defense adapted to any critical emergency which the varying course of events may bring forth. Our advances in these concerted systems have for the last ten years been steady and progressive, and in a few years more will be so completed as to leave no cause for apprehension that our seacoast will ever again offer a theater of hostile invasion. The next of these cardinal measures of policy is the preliminary to great and lasting works of public improvement in the surveys of roads, examination for the course of canals, and labors for the removal of the obstructions of rivers and harbors, first commenced by the act of Congress of 30th of April, 1824. The report exhibits in one table the funds appropriated at the last and preceding sessions of Congress for all these fortifications, surveys, and works of public improvement, the manner in which these funds have been applied, the amount expended upon the several works under construction, and the further sums which may be necessary to complete them; in a second, the works projected by the Board of Engineers which have not been commenced, and the estimate of their cost; in a third, the report of the annual Board of Visitors at the Military Academy at West Point. For thirteen fortifications erecting on various points of our Atlantic coast, from Rhode Island to Louisiana, the aggregate expenditure of the year has fallen little short of $1,000,000. For the preparation of five additional reports of reconnaissances and surveys since the last session of Congress, for the civil constructions upon thirty-seven different public works commenced, eight others for which specific appropriations have been made by acts of Congress, and twenty other incipient surveys under the authority given by the act of 30th April, 1824, about one million more of dollars has been drawn from the Treasury. To these $2,000,000 is to be added the appropriation of $250,000 to commence the erection of a breakwater near the mouth of the Delaware River, the subscriptions to the Delaware and Chesapeake, the Louisville and Portland, the Dismal Swamp, and the Chesapeake and Ohio canals, the large donations of lands to the States of Ohio, Indiana, Illinois, and Alabama for objects of improvements within those States, and the sums appropriated for light-houses, buoys, and piers on the coast; and a full view will be taken of the munificence of the nation in the application of its resources to the improvement of its own condition.