The British Mars : containing several schemes and inventions, to be practiced by land or sea against the enemies of Great-Britain ; shewing more plainly, the great advantage Britain has over other nations, by being masters at sea ; to which is added, an appendix, containing a scheme for manning the British navy, with less grievance to the subject; and a scheme to employ seamen ; of a copper mine near Hudson's Bay and of discovering the North-West passage, or determine there is no such passage ; with cautions and directions . as it may be impofibe to know the Breadthof t!:ie Ditch to a certaint
The British Mars : containing several schemes and inventions, to be practiced by land or sea against the enemies of Great-Britain ; shewing more plainly, the great advantage Britain has over other nations, by being masters at sea ; to which is added, an appendix, containing a scheme for manning the British navy, with less grievance to the subject; and a scheme to employ seamen ; of a copper mine near Hudson's Bay and of discovering the North-West passage, or determine there is no such passage ; with cautions and directions . as it may be impofibe to know the Breadthof t!:ie Ditch to a certainty, it will be advifeable tohave in readinc^fs thirty-eight or forty Feet of fparelength of Bridge, to be ufcd if n^cefTary, whichmay be eafily provided, by having a folding Part ofthirty or thircy-five Feet long, faitenfd to the afterAxle-Tree with flrong Hinges, and iis after End,(for the better Convenience t,>f travelling) fupportedby Wheels ten Fee: high, fo that the Men appoint-ed to convey it will have fufficicnt PvOom to hawlunder the Badge, and the Wheels m^y be taken a-way at plealure, as loon as the main Body of theBridge is pufned into the Ditch ; and inftead of theWheels, the outer End of the folding Pare may reflupon the covert Way, and by pulhing forward orhawliiig backward the faid main Body, the Bridgemay be made fuicable in length to the Breadth ofthe Ditch; and for the more convenient movingthe fecond Bridge over it, (which fhould be narrowerthan the firlt) it would be proper to fix firft a fold-. [21 ] ing Part at the fore End of this fecond Bridge, ofabout twenty Feet long, to face the Ditch. Suppcfe the Ditch to be one hundred and thirty-Feet wide, or a little more, though few exceedfuch a Brt-adth, and not many are lo wide, firftpufb the Bridge as above deicnbed into the Ditch,till only two or three Feet of the after End remainupon the covert Way, which muft be fixed downwith three or four Iron Stakes, or wel faftned wiihRopes to the remaining Parts of t
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Keywords: ., booksubjectmilitaryartandscience, booksubjectnavalartandscience
