[48] In describing his mode of obtaining rotary motion by ratchet wheels, a weight, and ropes, Hulls states that he uses two axes, one behind the other, each of which is essential to the object; and he then adds, that when his tow-boat is to be used in shallow rivers, the machine works by two cranks fixed to the hindermost axis; to which cranks are fixed two shafts (or poles) of proper length to reach the bottom of the river, and which move alternately forward _from the motion of the wheels by which the vessel is carried on_: so that the cranks, as described by Hulls, receive rotary motion from the axis on which they are placed, and do not, as has been erroneously stated, impart that motion to it.--Bennet Woodcroft, ‘Sketch of the Origin and Progress of Steam Navigation.’ London, 1848. The inventor, aware of the novelty of his proposal and of the readiness of the public to ridicule novelties, deprecated rash censure of his project, and only claimed for it a fair and unprejudiced trial. In order to exhibit the powers of his steam-boat, he constructed an engine in 1737, and had it fixed on board a little vessel for trial in the river Avon at Evesham. The trial was not satisfactory, and the engine was taken on shore again. “A failure! A failure!” cried the spectators, who stigmatised the projector as an ass. The prophet had, indeed, no honour whatever in his own country. Long after his steam-boat experiment had been forgotten, these lines about him were remembered:-- “Jonathan Hull, With his paper skull, Tried hard to make a machine That should go against wind and tide: But he, like an ass, Couldn’t bring it to pass, So at last was ashamed to be seen.”[49] Not much more is known of Jonathan Hulls’s history. In 1754 he published, in conjunction with two others, a treatise on ‘The Art of Measuring made Easy, by the help of a new Sliding-rule;’ and shortly after ‘The Malt-maker’s Instructor;’ but nothing more was heard of Jonathan Hulls’s steam-boat. [49] There are several versions of the same satire current to this day in the villages of Campden and Hanging Aston.