On leaving the Senate House, we drove to a slave-dealer’s establishment, near at hand, and within sight of the Capitol.  I have given some particulars of this visit elsewhere, which I need not repeat.  I cast my eye on some portraits and caricatures of abolitionists, British and American, among whom Daniel O’Connell figured in association with Arthur Tappan, and the ex-president Adams.  The young man in charge of the establishment began to explain them, for our amusement; on which, one of my companions pointed to me, and informed him I was an English abolitionist.  He looked uneasy at our presence, and evidently desirous we should not prolong our stay.  He told us there were five or six other dealers in the city who had no buildings of their own, and who kept their slaves here, or at the public city jail, at thirty-four cents per diem, the difference in comfort being wholly on the side of the private establishments.

We subsequently visited the city jail, to which reference is made in the letter below, and were able to confirm this statement from our own observation.

We left for Baltimore this afternoon.  Although I had not succeeded in presenting the address before-mentioned to the President, I little regretted the failure, being convinced that it would not be less generally read by the public on that account, and in this I have not been disappointed.  I proceeded at once, the next morning, to Philadelphia; and here I concluded to print and publish the following letter, which, was sent, through the post, to the President, and to each member of the Senate and House of Representatives.

    “To the Abolitionists of the United States.

“I was commissioned by the committee of the British and Foreign Anti-Slavery Society, to present a memorial from them to your President, and proceeded to Washington, a few days ago, accompanied by John G. Whittier, of Massachusetts, and a friend from the State of Delaware.

“It was my first visit to the seat of legislation of your great republic.  On our arrival we went to the House of Representatives, then in session.  A member from Maryland was speaking on our entrance, who was the author of a resolution, which had been carried in a former Congress, excluding nearly three millions of your countrymen, on whom every species of wrong and outrage is committed with impunity, from all right of petition, either by them selves or their friends.  He was advocating the re-enactment of this very resolution for the present Congress, and stated that he had a letter from your President approving the measure.  Although I believe I do not speak too strongly when I say an attempt to enforce such a resolution by any crowned head in the civilized world, would be inevitably followed by a revolution, yet it seemed evident that no small portion of your present members were in favor of it.  It was with no ordinary emotion that I saw the venerable ex-president