Upon her final departure from Drury Lane, Mrs. Siddons formed an engagement at Covent Garden, where she appeared for the first time, September 27, 1803. She continued there until June 29, 1812, on which day she bid farewell to the stage. During this time she performed in no new characters, nor is any circumstance which requires notice recorded of this part of her professional life. In her last season we find that, of her earlier characters, she performed Isabella, in ‘The Fatal Marriage,’ twice; Isabella, in ‘Measure for Measure,’ seven times; Euphrasia, twice; Belvidera, six times; and Mrs. Beverley, four times. It may perhaps be taken as an indication of that by which she wished chiefly to be remembered, that she played Lady Macbeth ten times, and chose it for her farewell. Queen Katherine she played six times; Constance and Volumnia, four times each; Elvira, five times; Mrs. Haller, twice; Hermione, four times. On her last appearance the house was crowded to excess, and the excitement of the occasion was testified by a general demand that the play should be stopped after Lady Macbeth’s appearance in the sleeping scene. Mrs. Siddons returned to the boards on various occasions, chiefly for her brother Charles’s benefit: her last performance was in the part of Lady Randolph, June 9, 1819. In giving, in addition to what we have already said, a short general notice of the professional merits of Mrs. Siddons, we shall confine our remarks chiefly to those characters which better suited her maturer years, in which alone a large majority of our readers can have seen her. She was throughout the tragic department the unrivalled actress of her time; though in such parts as Belvidera, Desdemona, Cordelia, &c., the power of exciting the sympathy of an audience might have been shared with her by Mrs. Cibber and other of her predecessors, or by her successors, Miss O’Neil or Miss Kemble. But in one respect she stands alone in her profession: she was the most intellectual of actresses. She was a person of deep thought, and an habitual student of nature with a view to the perfection of her art; and that as much, or more, in advanced life, than when she had her reputation to make or to enjoy in the first years of her celebrity. Mrs. Siddons sat day after day in her study, looking at Shakspeare and whatever bore upon him, not as if he were the mere poet of the stage, furnishing an outline to be filled up by her peculiar powers, but as if he were the high priest and expositor of human nature, whose lessons it was the serious business of her life to learn, and having learned, to teach.