The building to which the yard was attached, was two stories high, fronting on one of the public streets of Washington. Its outside presented only the appearance of a quiet private residence. A stranger looking at it, would never have dreamed of its execrable uses. Strange as it may seem, within plain sight of this same house, looking down from its commanding height upon it, was the Capitol. The voices of patriotic representatives boasting of freedom and equality, and the rattling of the poor slave's chains, almost commingled. A slave pen within the very shadow of the Capitol!