The freshness and novelty of its surroundings--Japan had not then, so to speak, become the property of the man in the street--counted for something in the triumph of 'The Mikado,' but it is unquestionably one of the very best of the series. Mr. Gilbert never wrote wittier or more brilliant dialogue, and Sullivan never dazzled his admirers by more astonishing feats of musicianship. 'Ruddigore' (1887) was less successful than any of its predecessors. If the satire of 'Princess Ida' was just a shade above the heads of the Savoy audience, the satire of 'Ruddigore' was perhaps a shade below them. 'Ruddigore' is a burlesque of transpontine melodrama, and a very good burlesque too; but the Savoy audience knew next to nothing about transpontine melodrama, and so the satire was missed and the piece fell flat. It was a pity, because Sullivan's music was in his happiest manner. There may yet, however, be a future for 'Ruddigore,' 'The Yeomen of the Guard' (1888) opened fresh ground. For the moment Mr. Gilbert turned his back upon topsy-turvydom and Sullivan approached the frontiers of grand opera. 'The Yeomen of the Guard' has a serious plot, and at times lingers on the threshold of tragedy. Sullivan caught the altered spirit of his collaborator with perfect sympathy, and struck a note of romantic feeling unique in his career. With 'The Gondoliers' (1889) the scene brightened again, and merriment reigned supreme once more. Perhaps at times there was a suspicion of weariness in Mr. Gilbert's wit, and some of Sullivan's melodies had not all the old distinction of manner, but the piece was an incarnation of liveliness and gaiety, and its success rivalled the historic glories of 'The Mikado.' With 'The Gondoliers' came the first solution of continuity in the Gilbert and Sullivan partnership. Differences arose; Mr. Gilbert retired from the councils of the Savoy Theatre, and Sullivan had to look out for a new collaborator. He found one in Mr. Sydney Grundy, and their 'Haddon Hall' was produced in 1892. In spite of charming music, reflecting very gracefully the old English atmosphere of the story, its success was only moderate, and the world of music was much relieved to hear that the differences between Mr. Gilbert and the Savoy authorities had been adjusted, and that the two famous collaborators were to join forces once more. Unfortunately 'Utopia' (1893) echoed but faintly the magical harmonies of the past. The old enchantment was gone; the spell was shattered. Both collaborators seemed to have lost the clue that had so often led to triumph. Again they drifted apart, and Sullivan turned once more to his old friend, Sir Frank Burnand. Together they produced 'The Chieftain' (1894), a revised and enlarged version of their early indiscretion, 'The Contrabandista.' Success still held aloof, and for the last time Sullivan and Mr. Gilbert joined forces. In 'The Grand Duke' (1896) there were fitful gleams of the old splendour, notably in an amazing