There are other provisions of the Constitution of the United States, which have more or less bearing on this question. "No State shall, without the consent of Congress, lay any duty of tonnage." Under color of grants like this, that prohibition might be wholly evaded. This grant authorizes Messrs. Livingston and Fulton to license navigation in the waters of New York. They, of course, license it on their own terms. They may require a pecuniary consideration, ascertained by the tonnage of the vessel, or in any other manner. Probably, in fact, they govern themselves, in this respect, by the size or tonnage of the vessels to which they grant licenses. Now, what is this but substantially a tonnage duty, under the law of the State? Or does it make any difference, whether the receipts go directly into her own treasury, or into the hands of those to whom she has made the grant? There is, lastly, that provision of the Constitution which gives Congress power to promote the progress of science and the useful arts, by securing to authors and inventors, for a limited time, an exclusive right to their own writings and discoveries. Congress has exercised this power, and made all the provisions which it deemed useful or necessary. The States may, indeed, like munificent individuals, exercise their own bounty towards authors and inventors, at their own discretion. But to confer reward by exclusive grants, even if it were but a part of the use of the writing or invention, is not supposed to be a power properly to be exercised by the States. Much less can they, under the notion of conferring rewards in such cases, grant monopolies, the enjoyment of which is essentially incompatible with the exercise of rights possessed under the laws of the United States. I shall insist, however, the less on these points, as they are open to counsel who will come after me on the same side, and as I have said so much upon what appears to me the more important and interesting part of the argument. [Footnote 1: 1 Laws U.S., p. 28, Bioren and Duane's ed.] [Footnote 2: 1 Laws U.S., p. 50.] [Footnote 3: Chancellor Livingston.] [Footnote 4: 1 Black. Com. 273; 4 Black. Com. 160.] THE BUNKER HILL MONUMENT. AN ADDRESS DELIVERED AT THE LAYING OF THE CORNER-STONE OF THE BUNKER HILL MONUMENT AT CHARLESTOWN, MASSACHUSETTS, ON THE 17TH OF JUNE, 1825.