"Again Mrs. Stowe says, 'To-day the Duchess of Sutherland called with the Duchess of Argyle. Miss Greenfield happened to be present; and I begged leave to present her, giving a slight sketch of her history. I was pleased with the kind and easy affability with which the Duchess of Sutherland conversed with her, betraying by no inflection of voice, and nothing in her air or manner, the great lady talking with the poor girl. She asked all her questions with as much delicacy, and made her request to hear her sing with as much consideration and politeness, as if she had been addressing any one in her own circle. She seemed much pleased with her singing, and remarked that she should be happy to give her an opportunity of performing in Stafford House, as soon as she should be a little relieved of a heavy cold which seemed to oppress her at present. This, of course, will be decisive of her favor in London. The duchess is to let us know when the arrangement is completed. "'I never so fully realized,' continues Mrs. Stowe, 'that there really is no natural prejudice against color in the human mind. Miss Greenfield is a dark mulattress, of a pleasing and gentle face, though by no means handsome. She is short and thick-set, with a chest of great amplitude, as one would think on hearing her tenor. I have never seen, in any of the persons to whom I have presented her, the least indications of suppressed surprise or disgust, any more than we should exhibit on the reception of a dark-complexioned Spaniard or Portuguese. "'Miss Greenfield bears her success with much quietness and good sense.' "Her Grace the Duchess of Sutherland afterward became her ever-unfailing supporter and adviser. "The piano-forte which previously had been furnished Miss Greenfield to practise upon was taken from her. The Duchess of Sutherland, upon learning the fact, immediately directed her to select one from Broadwood's. "We cannot refrain from quoting Mrs. Stowe's description of the concert after dinner at the Stafford House:--