The idea, however, had been born, and was not allowed to die. When Mr. Miller of Dalswinton had revived the notion of propelling vessels by means of paddle-wheels, worked, as Savery had before worked them, by means of a capstan placed in the centre of the vessel, and when he complained to Symington of the fatigue caused to the men by working the capstan, and Symington had suggested the use of steam, Mr. Miller was impressed by the idea, and proceeded to order a steam-engine for the purpose of trying the experiment. The boat was built at Edinburgh, and removed to Dalswinton Lake. It was there fitted with Symington's steam-engine, and first tried with success on the 14th of October, 1788, as has been related at length in Mr. Nasmyth's 'Autobiography.' The experiment was repeated with even greater success in the charlotte Dundas in 1801, which was used to tow vessels along the Forth and Clyde Canal, and to bring ships up the Firth of Forth to the canal entrance at Grangemouth. The progress of steam navigation was nevertheless very slow. Symington's experiments were not renewed. The Charlotte Dundas was withdrawn from use, because of the supposed injury to the banks of the Canal, caused by the swell from the wheel. The steamboat was laid up in a creek at Bainsford, where it went to ruin, and the inventor himself died in poverty. Among those who inspected the vessel while at work were Fulton, the American artist, and Henry Bell, the Glasgow engineer. The former had already occupied himself with model steamboats, both at Paris and in London; and in 1805 he obtained from Boulton and Watt, of Birmingham, the steam-engine required for propelling his paddle steamboat on the Hudson. The Clermont was first started in August, 1807, and attained a speed of nearly five miles an hour. Five years later, Henry Bell constructed and tried his first steamer on the Clyde. It was not until 1815 that the first steamboat was seen on the Thames. This was the Richmond packet, which plied between London and Richmond. The vessel was fitted with the first marine engine Henry Maudslay ever made. During the same year, the Margery, formerly employed on the Firth of Forth, began plying between Gravesend and London; and the Thames, formerly the Argyll, came round from the Clyde, encountering rough seas, and making the voyage of 758 miles in five days and two hours. This was thought extraordinarily rapid--though the voyage of about 3000 miles, from Liverpool to New York, can now be made in only about two days' more time.