Arduous, however, as these occupations must appear, especially when it is considered that her brother's observations were always carried on (circumstances permitting) till daybreak, without regard to season, and indeed chiefly in winter, they proved insufficient to exhaust her activity. In the intervals, she found time both for astronomical observations of her own, and for the execution of more than one work of great extent and utility. The observations she made with a small Newtonian sweeper, constructed for her by her brother, with which she found no less than eight comets; and on five of these occasions her claim to the _first_ discovery is admitted. These sweeps also proved productive of the detection of several remarkable nebulæ and clusters of stars, previously unobserved. On her brother's death, in 1822, Miss Herschel returned to Hanover, which she never again quitted; passing the last twenty-six years of her life in repose--enjoying the society, and cherished by the regard of, her remaining relatives and friends; gratified by the occasional visits of eminent astronomers, and honoured with many marks of favour and distinction on the part of the King of Hanover, the Crown Prince, and his amiable and illustrious consort. To within a very short period of her death, her health continued uninterrupted, her faculties perfect, and her memory (especially of the scenes and circumstances of former days) remarkably clear and distinct. Her end was tranquil and free from suffering--a simple cessation of life. We append the following just and eloquent tribute to the merits of Miss Herschel, from Dr. Nichol's "Views of the Architecture of the Heavens:"--