James Buchanan: “Unforeseen circumstances, however, retarded the exchange until the 16th of August last.”

The safety of the immense amount of public property in this city and that of the archives of the Government, in which all the States, and especially the new States in which the public lands are situated, have a deep interest.

Herewith I inclose, for constitutional action of the Senate thereon should it approve the same, supplemental articles of agreement made and concluded with the authorities of the Delaware Indians on the 21st July last, with a view to the…

The dispatch of Mr. Dallas being in the original, its return to the Department of State is requested.

In compliance with the resolutions of the Senate of the 17th and 18th February, 1858, requesting information upon the subject of the Aves Island, I transmit a report from the Secretary of State and the documents which accompanied it.