The attention of Congress is invited to the importance of making suitable modifications and reductions of the rates of duty imposed by our present tariff laws. The object of imposing duties on imports should be to raise revenue to pay the necessary expenses of Government. Congress may undoubtedly, in the exercise of a sound discretion, discriminate in arranging the rates of duty on different articles, but the discriminations should be within the revenue standard and be made with the view to raise money for the support of Government. It becomes important to understand distinctly what is meant by a revenue standard the maximum of which should not be exceeded in the rates of duty imposed. It is conceded, and experience proves, that duties may be laid so high as to diminish or prohibit altogether the importation of any given article, and thereby lessen or destroy the revenue which at lower rates would be derived from its importation. Such duties exceed the revenue rates and are not imposed to raise money for the support of Government. If Congress levy a duty for revenue of 1 per cent on a given article, it will produce a given amount of money to the Treasury and will incidentally and necessarily afford protection or advantage to the amount of 1 per cent to the home manufacturer of a similar or like article over the importer. If the duty be raised to 10 per cent, it will produce a greater amount of money and afford greater protection. If it be still raised to 20, 25, or 30 per cent, and if as it is raised the revenue derived from it is found to be increased, the protection or advantage will also be increased; but if it be raised to 31 per cent, and it is found that the revenue produced at that rate is less than at 30 per cent, it ceases to be a revenue duty. The precise point in the ascending scale of duties at which it is ascertained from experience that the revenue is greatest is the maximum rate of duty which can be laid for the bona fide purpose of collecting money for the support of Government. To raise the duties higher than that point, and thereby diminish the amount collected, is to levy them for protection merely, and not for revenue. As long, then, as Congress may gradually increase the rate of duty on a given article, and the revenue is increased by such increase of duty, they are within the revenue standard. When they go beyond that point, and as they increase the duties, the revenue is diminished or destroyed; the act ceases to have for its object the raising of money to support Government, but is for protection merely. It does not follow that Congress should levy the highest duty on all articles of import which they will bear within the revenue standard, for such rates would probably produce a much larger amount than the economical administration of the Government would require. Nor does it follow that the duties on all articles should be at the same or a horizontal rate. Some articles will