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 . ll be firil full ot Rolls, upon which beginto throv/ Earth over the r
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 . ll be firil full ot Rolls, upon which beginto throv/ Earth over the rolling Parapets, that liefor a Defence, till you have thrown over a Quan-tity fufHcient to make a Plain, to advance yourrolling Parapets upon, in order to roll over moreRolls, to fill more of the Ditch; keep the firflRolls where they v/ere fixed at firfl, and roll otherRolls over them to an advanced Defence, overv/hich roll more Rolls to fill up the other Part ofthe Fofs, which being fufRciently full of Rolls,if a great Fire is made from the Town, throwEarth over the firfl fixed Rolls, then over the ad-vanced Rolls, from Hand to Hand, and fo con-tinue five or fix Calls, or more, if Need be, fromEland to Hand, over the advanced Rolls, till theDitch is fufficiently filled up for a Paflfage over. Thus * This Manner of fixing Ladders has not been tryed that Iknow of, but if it carry the fame Face to Engineers, whoare pradiced in thofe Arts, as it doth to me, it is worth bc-ftowing an Experiment upon. To^-fttcerBzsie^ 3^.. ]Eb5)laiLatioiL. to c^ //rV o9rc(>/i^ !Ct^y>/nr< t^/li (J «^ U-a. t - Her,( tOic/tt^Jc^ittJtnA^J- [ 38 ] the Ladders* without being obliged to ftop to fixthem, by which Delay many are generally killed. If the Place has a fecond Covert-Way, this Co-vert-Way muft be taken in the Manner already de-fcribed, and the Ditch may foon be made pailablev/ith little Lofs, by, Means of the rolling Parapets ;but if a Dirch is to be crclTed before the Fire of the
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