Among the vocalists were Mrs. Lampe (1766–1767) and the famous Thomas Lowe (1771 and later). In 1768 Spinacuti exhibited his wonderful monkey which performed on the tight-rope feats resembling Blondin’s. Jemmy Warner, the clown, appeared in 1769, and Richer, the wire and ladder dancer, in 1773; and the years 1775 and 1776 were noticeable for the appearance of James Byrne, the harlequin, father of Oscar Byrne. In 1778 the interior of the theatre was entirely altered and the roof considerably raised. The audience now often included people of rank, such as the Duke and Duchess of York and the Duke and Duchess of Gloucester. In 1781 Joseph Grimaldi (_b._ 1779, _d._ 1837) made his first appearance at Sadler’s in the guise of a monkey, and appeared there year by year till within a few years of his retirement. On 17 March, 1828, he took a farewell benefit there, playing “Hock,” the drunken prisoner in “Sixes, or the Fiend.” His final appearance was at Drury Lane on 27 June, 1828, when, prematurely broken down in health, he sang, seated, his last song, and made his farewell speech. The Dibdins, Charles the elder in 1772 and Charles the younger, 1801 to 1814, wrote many plays and songs for Sadler’s Wells. Charles the younger and Thomas Dibdin were also proprietors and managers. Among the performers who appeared between the years 1780 and 1801 were Miss Romanzini, the ballad-vocalist, afterwards Mrs. Bland. Braham (then Master Abrahams) the singer; Paul Redigé the clever tumbler, called “the little Devil”; La Belle Espagnole, his wife; Dighton and “Jew” Davis, pantomimists; Bologna and his sons in their exhibitions of postures and feats of strength; Placido the tumbler, Dubois the clown, and Costello (1783), whose wonderful dogs enacted a play called _The Deserter_. Edmund Kean, the tragedian, appeared in June 1801 as “Master Carey, the pupil of Nature,” and recited Rollo’s address from _Pizarro_. [Illustration: SPINACUTI’S MONKEY AT SADLER’S WELLS, 1768.] Among the varied entertainments at Sadler’s may be mentioned the pony-races in 1802 (July) and 1822 (April and June). A course was formed by means of a platform carried from the stage round the back of the pit. In 1806 and 1826 a racecourse was formed outside in the ground to the east of the theatre; booths, stands, and a judge’s box were erected, and many of the most celebrated full-sized ponies with a number of jockeys of “great celebrity” and lightweight were, at least according to the bills, engaged. In 1826 (June) a balloon ascent from the grounds was made by Mrs. Graham, and in 1838 her husband also ascended. Belzoni, the famous excavator, exhibited his feats of strength in 1803. In 1804 Sadler’s Wells was known as the “Aquatic Theatre.” A large tank filled with water from the New River occupied nearly the whole of the stage, and plays were produced with cascades and other “real water” effects.