I told Mr. M. how much we had condemned his fugitive slave law; but he convinced me that it was a most humane and excellent measure. Fugitives from the kindest masters, and ungrateful for all the blessings of slavery, why should they not be brought back in chains? He reminded me of Generals Shields, Corcoran, and Meagher, Irishmen commanding Irish troops for the North, and said they should be brought back to Ireland and hung on Emmet's scaffold. You know we keep that scaffold still standing, as a terror to Irish rebels, although we admire so much rebellion in America. Mr. M. spoke also of Sigel, Heintzelman, Rosecrans, Asboth, and expressed his surprise that the Bourbon princes would fight side by side with the _mudsills_ of the North. In a few years, Mr. M. said, the South would establish a monarchy, and that a son of the Queen should marry a daughter of Jefferson Davis, and thus unite the two dynasties by kindred ties. It was his opinion that the South would limit the right of suffrage to slaveholders, numbering about two hundred thousand; that they would have a house of peers, lords temporal and spiritual, composed (including bishops) of all who held over five hundred slaves; but that their Archbishop of _Canting_bury should own at least one thousand. He thought the number requisite for the peerage would be enlarged after the reopening of the African slave trade, which would soon furnish England cheap cotton. His remarks on this subject reminded me how large a portion of my fortune was accumulated, during the last century, by the profits of the African slave trade. Mr. M. told me the King of Dahomey would furnish the South one hundred thousand slaves a year, for twenty dollars each, and that England should have the profits of the trade as before, and Liverpool again be the great slave port. He alluded to the CONTINENTAL MONTHLY, which he said was an abolition journal, and denounced Kirke, Kimball, Leland, Henry, Greeley, Stanton, and Walker. He was specially severe on Walker and Stanton, charging them with the defeat of the pro-slavery Lecompton Constitution, and the consequent accession of Kansas and all the Territories to the free States, He said Walker and Stanton had no right to reject the Oxford and McGee returns, although they were forged. And now, dear Mrs. Stowe, if you would only change, as we all have here, and write, as you only can, a great novel to prove the beauties of slavery, its circulation here would be enormous, and we would make you a duchess. Adieu until my next. P.S.--I have invested all my United States stock in Confederate bonds. * * * * * The style of the foregoing letter would point to the Duchess of Sutherland as the author, but such a change would be miraculous. Was the copy of the letter found in an intercepted despatch from Mr. Mason to Jefferson Davis? * * * * * THE CONTINENTAL MONTHLY: EDITORS: