SIR: By the direction of the President of the United States, I have the honor to communicate to you a copy of the evidence furnished to this Department of an extraordinary outrage committed from Her Britannic Majesty's Province of Upper Canada on the persons and property of citizens of the United States within the jurisdiction of the State of New York. The destruction of the property and the assassination of citizens of the United States on the soil of New York at the moment when, as is well known to you, the President was anxiously endeavoring to allay the excitement and earnestly seeking to prevent any unfortunate occurrence on the frontier of Canada have produced upon his mind the most painful emotions of surprise and regret. It will necessarily form the subject of a demand for redress upon Her Majesty's Government. This communication is made to you under the expectation that through your instrumentality an early explanation may be obtained from the authorities of Upper Canada of all the circumstances of the transaction, and that by your advice to those authorities such decisive precautions may be used as will render the perpetration of similar acts hereafter impossible. Not doubting the disposition of the government of Upper Canada to do its duty in punishing the aggressors and preventing future outrage, the President nevertheless has deemed it necessary to order a sufficient force on the frontier to repel any attempt of a like character and to make known to you that if it should occur he can not be answerable for the effects of the indignation of the neighboring people of the United States. I avail myself of this occasion, etc. JOHN FORSYTH. _Mr. Forsyth to Mr. Fox_. DEPARTMENT OF STATE, _Washington, January 9, 1838_. HENRY S. FOX, Esq., etc. SIR: With reference to my note of the 5th instant, communicating to you evidence of an extraordinary outrage committed from Her Britannic Majesty's Province of Upper Canada on the persons and property of certain citizens of the United States at Schlosser, within the jurisdiction of the State of New York, on the night of the 29th ultimo, I have now the honor to transmit to you the copy of a letter[26] recently received from the attorney of the United States for the northern district of New York, dated the 8th of the current month, with transcripts of sundry depositions[26] which accompanied it, containing additional information in regard to that most disastrous occurrence. A letter from Mr. George W. Pratt of the 10th of January, with inclosures relating to the same subject, is also sent. I avail myself of this occasion to renew to you the assurance of my distinguished consideration. JOHN FORSYTH. [Footnote 26: Omitted.] ROCHESTER, _January 10, 1838_. The PRESIDENT. SIR: Colonel McNab, having avowed that the steamboat _Caroline_ was destroyed by his orders, justifies himself by the plea, sustained by affidavits, that hostilities were commenced from the American shore.