to be worked by the crew. The principal experiment was made in the Firth of Forth on the 2d of June 1787. The vessel was double-hulled, and was worked by a capstan of five bars. The experiment was on the whole successful. But the chief difficulty was in the propulsive power. After a spurt of an hour or so, the men became tired with their laborious work. Mr. Taylor, student of divinity, and tutor of Mr. Miller's sons, was on board, and seeing the exhausted state of the men at the capstan, suggested the employment of steam-power. Mr. Miller was pleased with the idea, and resolved to make inquiry upon the subject.

At that time William Symington, a young engineer from Wanlockhead, was exhibiting a road locomotive in Edinburgh. He was a friend of Taylor's, and Mr. Miller went to see the Symington model. In the course of his conversation with the inventor, he informed the latter of his own project, and described the difficulty he had experienced in getting his paddle-wheels turned round. On which Symington immediately asked, "Why don't you use the steam-engine?" The model which Symington exhibited, produced rotary motion by the employment of ratchet-wheels. The rectilinear motion of the piston-rod was thus converted into rotary motion. Mr. Miller was pleased with the action of the ratchet-wheel contrivance, and gave Symington an order to make a pair of engines of that construction. They were to be used on a small pleasure-boat on Dalswinton Lake.

The boat was constructed on the double-hull or twin plan, so that the paddle should be used in the space between the hulls.[note: This steam twin boat was in fact the progenitor of the Castalia, constructed about a hundred years later for the conveyance of passengers between Calais and Dover.]

After much vexatious delay, arising from the entire novelty of the experiment, the boat and engines were at length completed, and removed to Dalswinton Lake. This, the first steamer that ever "trod the waters like a thing of life," the herald of a new and mighty power, was tried on the 14th of October 1788. The vessel steamed delightfully, at the rate of from four to five miles an hour, though this was not her extreme rate of speed. I give, on the next page, a copy of a sketch made by my father of this the first actual steamboat, with her remarkable crew.

The first steamboat. By Alexander Nasmyth[note: The original drawing of the steamer was done by my father, and lent by me to Mr. Woodcroft, Who inserted it in his Origin and Progress of Steam Navigation. He omitted my father's name, and inserted only that of the lithographer, although it is a document of almost national importance in the history of Steam Navigation.

P.S.-- since the above paragraph was written for the first edition, I have been enabled to find the drawing, with another remarkable pencil sketch of my father's, in the Gallery of the Museum of Naval Architecture at South Kensington. It will henceforward belong to that interesting collection.

The remarkable pencil sketch to which I have referred, is that of a screw propeller, drawn by my father, dated 1819. It was the result of many discussions as to the proper mode of propelling a vessel. First, he had drawn Watt's idea of a "spiral oar"; then, underneath, he has drawn his own idea, of a disk of six. blades, like a screw-jack, immediately behind the rudder. There is a crank shown on the screw shaft, by which the propeller was driven direct, showing that he was the first to indicate that method of propulsion of steamboats.]

The persons on board consisted of Patrick Miller, William Symington, Sir William Monteith, Robert Burns (the poet, then a tenant of Mr Miller's), William Taylor, and Alexander Nasmyth. There were also three of Mr. Miller's servants, who acted as assistants. On the edge of the lake was a young gentleman, then on a visit to Dalswinton. He was no less a person than Henry Brougham, afterwards Lord Chancellor of England. The assemblage of so many remarkable men was well worthy of the occasion.

Taking into account the extraordinary results which have issued from this first trial of an actual steamboat, it may well be considered that this was one of the most important circumstances which ever occurred in the history of navigation. It ought, at the same time, to be remembered that all that was afterwards done by Symington, Fulton, and Bell, followed long after the performance of this ever-memorable achievement.


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