The great example of apparent donation of lands to the States likely to be relied upon as sustaining the principles of this bill is the relinquishment of swamp lands to the States in which they are situated, but this also, like other grants already referred to, was based expressly upon grounds clearly distinguishable in principle from any which can be assumed for the bill herewith returned, viz, upon the interest and duty of the proprietor. They were charged, and not without reason, to be a nuisance to the inhabitants of the surrounding country. The measure was predicated not only upon the ground of the disease inflicted upon the people of the States, which the United States could not justify as a just and honest proprietor, but also upon an express limitation of the application of the proceeds in the first instance to purposes of levees and drains, thus protecting the health of the inhabitants and at the same time enhancing the value of the remaining lands belonging to the General Government. It is not to be denied that Congress, while administering the public lands as a proprietor within the principle distinctly announced in my annual message, may sometimes have failed to distinguish accurately between objects which are and which are not within its constitutional powers. After the most careful examination I find but two examples in the acts of Congress which furnish any precedent for the present bill, and those examples will, in my opinion, serve rather as a warning than as an inducement to tread in the same path.