For some twenty years he was in charge of office and field parties on the detail survey and plan drawing. He had the local superintendence and direction, under Captain Williams, R.E., of the survey of the property belonging to the duchy of Lancaster at Langeinor, in South Wales, and of the Royal domain of Windsor Castle, under Major Tucker, R.E. His qualifications, as displayed in the direction of these surveys, led to his selection for the charge of the London survey, but his connection with it on the part of the Ordnance, was early broken, by his receiving, in July, 1848, the appointment of surveyor to the Metropolitan Commissioners of Sewers, at 200_l._ a-year, which salary has since been considerably increased. On leaving the corps he received a silver medal and gratuity for his long services and exemplary conduct. Ever since his discharge he has had the superintendence of a large staff of draughtsmen and men surveying underground in the sewers. In February, 1851, seven hundred miles of sewers had been thoroughly examined, and the levels of the different parts minutely ascertained. “The result of this,” observed Sir Henry de la Beche, “is that they had documents connected with the condition of these seven hundred miles of sewerage, such as were not possessed by any metropolis in Europe. It was but justice,“ adds Sir Henry, “in referring to the work as examined, to call attention to the officer who had charge of it—Mr. Joseph Smith, who had executed his task with an ability, a zeal, and perseverance, deserving the highest eulogiums both of that court and the inhabitants of the whole metropolis.”—‘The Times,’ 1st February, 1851. Mr. Smith afterwards became conspicuous for his report condemning the construction of the Victoria Sewer, which was nullified by an entirely antagonistic report from Mr. Forster, the engineer, and gave rise to some little discussion in the House of Commons between Sir Benjamin Hall and Lord Ebrington.—‘The Times,’ July 30, 1851. Footnote 2: