Mr. Gordon took out a patent for a steam-coach in 1822, and constructed two different machines. One had its wheels surrounded by cogs, or projecting teeth. This engine was to be placed within a large rolling drum, about nine feet in diameter and five feet wide, the inside of which should be fitted with circular rack-rails fitting the wheels of the steam-engine. Thus the motion of the engine would cause the drum to roll forward, on the same principle that a squirrel causes a cylindrical cage to revolve; and the rolling of the drum was to move a carriage connected with it. The other machine had two long propellers or legs, intended to obviate the supposed tendency of wheels to slip when ascending a slope. The Thames Tunnel, which was begun in 1825 by Mr. Brunel, was on more than one occasion threatened with destruction by irruptions of water. On Jan. 12, 1828, six workmen perished by a sudden rush of water into the workings, and on the 20th the _Observer_ published an engraving representing the catastrophe. On the 9th of June appeared 'A correct view of Ascot Heath Race Course, taken by an eminent artist on Thursday last.' This 'eminent artist' was William Harvey, and the cut bears the names of Jackson and Smith as the engravers. A sheet containing a selection of comic sketches from _Bell's Life_ was issued with the _Observer_ of July 20, 1828, accompanied by a statement that the sketches (twenty-seven in number) cost one hundred and forty-two pounds, drawing and engraving. This sounds very trivial when contrasted with the large sums now paid by illustrated newspapers.