[1] A way--omitted. [2] but--for yet. [3] poop. P. [_A Boat driving against wind and tide._] The wording of this article is varied as follows in the MS. of certain of his Inventions. See Appendix A. He therein states:-- “By this (his quintessence of motion), I can make a vessel, of as great burden as the river can bear, to go against the stream; which, the more rapid it is, the faster it shall advance. And the moveable part that works it, may be, by one man, still guided, to take the best advantage of the stream; and yet to steer the boat to any point. And this engine is applicable to any vessel or boat, whatsoever, without being, therefore, made on purpose; and work these effects:--It roweth; it draweth; it driveth, if need be, to pass London bridge against the stream, at low water. And a boat lying at anchor, the engine may be used for loading or unloading.” He made this invention one of the four subjects in his Patent of 1661 (see Appendix B), which again varies the reading; but this last plainly indicates the motive power as having been a mill. He proposes in his patent specification:--“To make a boat that roweth, draweth, or setteth even against wind or stream, yea, both, and to any part of the compass which way soever the stream runs or wind blows, and yet the force of the wind or stream causeth its motion, nothing being required but a steersman; and whilest the boat stayeth to be loaded or unloaded, the stream or wind shall perform such work as any water-mill or wind-mill is capable of.” Among the Harleian MSS. in the British Museum, there is an Italian book of sketches on parchment, No. 3281, attributed to the 15th century, entitled, “Delineationes Machinarum;” from one of the pen and ink drawings of which the annexed engraving is a reduced copy. It is a paddle boat of a very primitive form, to be operated by men working at two crank handles. The Marquis seems to have had a very similar idea, only employing the mechanical arrangements of a suitable wind or water-mill. [Illustration: Ancient Paddle Boat] In that fine work, “Vitruvia de Architectura,” folio, Como, 1521, there is an engraving of a large vessel propelled by paddles, worked by animal power; therefore, so far as such a mode of propulsion is concerned, paddle-wheels are of very ancient origin. In 1574, Ralph Rabbards[J] presented to Queen Elizabeth, through the medium of the venerable Lord Burghley, a list of twenty-five inventions. The 24th is:--“The rarest engine that was ever invented for sea service. A vessel in manner of a galley or galliotte to pass upon the seas and rivers without oars or sail, against wind and tide, swifter than any that ever hath been seen; of wonderful effect both for intelligence, and many other admirable exploits, almost beyond the expectation of man.”