STEAM NAVIGATION. 15

a the vessel in a horizontal direction was by“ an oar formed upon the 1776.ad principle of the screw, which was fixed in the fore part of the vessel,

1ts axis entering the vessel, and being turned one way, rowed thevessel forward

for.; but being turned the other way, rowed it backward:U 1 was made to be turned by the hand or foot, a rudder hung to theow hinder part of the vessel commanding(its course) with the greatestble ease.” This vessel carried a powder magazine, which could beere Screwed into the under part of an enemy’s ship, attached to whichich was a kind of time-piece, which would“ run any length of time underto 12 hours; and when it had run out any portion of time to which itirst had been set, it unpinioned a strong lock, resembling a gun-lock,| is which gave fire to the powder.”his time-apparatus was set in motion by the sub-marine vesseldie leaving the magazine attached to a ship. A number of experimentsus) IE to blow up ships of war with this apparatus, but they allN On this day Matthew Wasborough, an Engineer of the city of March 10,Bristol, obtained a patent, the title of which clearly shows that he METsed Considered Something more was wanting to make the steam engine aof fit instrument to propel a ship, added to Watt’s improvement of the'his double acting cylinder engine; namely, a practicable mode of con-th Verne a rectilinear into a continuous circular motion, for the systemly, x this time used to obtain a circular motion from the steam engineWas to employ it to raise water by pumping, and then to pass theLa water on to an over-shot water wheel."The title for which Wasbo-ler, Foveh obtained his patent is as follows:“ Of his new invented Ma-lar Chine or Piece of Mechanism, which, when applied to a Steam Enginethe°Y any Perpendicular Motion, either by means of one or more levers,hat Een reciprocal movement, it becomes circular without the medium‚it er ter wheel, which will prove of great utility to the public inled Srinding of Wheat, Barley, Malt, and all other kind of grain,

* See“ Repertory of Arts,” vol. xv. p. 395.