The Chairman, Sir ARCHIBALD ALISON, gave "The health of her Grace the Duchess of Sutherland, and the noble patronesses of the Society," which was received with great applause. It was extremely gratifying, he said, to find a lady, belonging to one of the most ancient and noblest families of the kingdom, displaying so great an interest in their institution. [Cheers.] Not the least of their obligations to her Grace was the opportunity she had given them to offer their respects to a lady, remarkable alike for her genius and her philanthropy, who had come from across the Atlantic, and who, by her philanthropic exertions in the cause of negro emancipation, had enlisted the feelings and called forth the sympathies of thousands and tens of thousands on both sides of the ocean. [Tremendous cheering.] She had shown that the genius, and talents, and energies, which such a cause inspired, had created a species of freemasonry throughout the world; it had set aside nationalities, and bound two nations together which the broad Atlantic could not sever; and created a union of sentiment and purpose which he trusted would continue till the great work of negro emancipation had been finally accomplished. [Cheers.] PROFESSOR STOWE responded to the allusion which had been made to Mrs. Stowe, and was greeted with hearty applause. He said he had read in his childhood the writings of Sir Walter Scott, and thus became intensely interested in all that pertained to Scotland. [Cheers.] He had read, more recently, his Life of Napoleon, and also Sir Archibald Alison's History of Europe. [Protracted cheers.] But he certainly never expected to be called upon to address such an assembly as that, and under such circumstances. Nothing could exceed the astonishment which was felt by himself and Mrs. Stowe at the cordiality of their reception in every part of Great Britain, from persons of every rank in life. [Cheers.] Every body seemed to have read her book. [Hear, hear! and loud cheers.] Everyone seemed to have been deeply interested, [cheers,] and disposed to return a full-hearted homage to the writer. But all she claimed credit for was truth, and honesty, and earnestness of purpose. He had only to add that he cordially thanked the Royal Highland School Society for the kindness which induced them to invite him and Mrs. Stowe to be present that evening. [Cheers.] The work in which the society was engaged was one that they both held dear, and in which they felt the deepest interest, inasmuch as that object was to promote the education of youth among those whose poverty rendered them unable to provide the means of education for themselves. [Hear, hear!] In such works as that they had themselves for most of their lives been diligently engaged. [Cheers.] ANTISLAVERY SOCIETY, EXETER HALL--MAY 16.