The act of the 30th of July, 1846, "reducing the duties on imports," has been in force since the 1st of December last, and I am gratified to state that all the beneficial effects which were anticipated from its operation have been fully realized. The public revenue derived from customs during the year ending on the 1st of December, 1847, exceeds by more than $8,000,000 the amount received in the preceding year under the operation of the act of 1842, which was superseded and repealed by it. Its effects are visible in the great and almost unexampled prosperity which prevails in every branch of business. While the repeal of the prohibitory and restrictive duties of the act of 1842 and the substitution in their place of reasonable revenue rates levied on articles imported according to their actual value has increased the revenue and augmented our foreign trade, all the great interests of the country have been advanced and promoted. The great and important interests of agriculture, which had been not only too much neglected, but actually taxed under the protective policy for the benefit of other interests, have been relieved of the burdens which that policy imposed on them; and our farmers and planters, under a more just and liberal commercial policy, are finding new and profitable markets abroad for their augmented products. Our commerce is rapidly increasing, and is extending more widely the circle of international exchanges. Great as has been the increase of our imports during the past year, our exports of domestic products sold in foreign markets have been still greater. Our navigating interest is eminently prosperous. The number of vessels built in the United States has been greater than during any preceding period of equal length. Large profits have been derived by those who have constructed as well as by those who have navigated them. Should the ratio of increase in the number of our merchant vessels be progressive, and be as great for the future as during the past year, the time is not distant when our tonnage and commercial marine will be larger than that of any other nation in the world.