Identifier: britishmarsconta00robs (find matches)
Title: 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
Year: 1763 (1760s)
Authors: Robson, Joseph
Subjects: Great Britain. Royal Navy Military art and science Naval art and science Fortification
Publisher: London : Printed for the author, and sold by W. Flexney
Contributing Library: University of Pittsburgh Library System
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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Baf-tions to defend it when the Town is taken, norcover more Ground than is neceflary to fupport theSuperftrudureJ, if in a wet Situation, and yet bedefenceable to hold out a confiderable Time afterthe Town is taken, as the new Method of fortifyingcontained in the next two Chapters v/ill Ihow 5 feeFig. 10. PhJeYlll. C H A P. III. « Explanation of Fig. i. Plate Yl\.A new Method to fortify a Re-entering Angle. AA The Ditch at the Foot of the Efcarpe.BA The (loping Heigth of the Body of the Place. CD t This Battery will much annoy the Befiegers in their Ap-proaches, and ruin their Batteries till they get near the Bodyof the Place, and are covered by the Works of the To\yn. X If the Situation is dry, the Bottom of this Battery, beingof a fmall Extent, may be well fecured with Mines, and hol-low Piles, at a little Expence; and the Bottom being verythick of folid Mafonry, with a great Thicknefs of Earth roundit, will require a very confiderable Time to make a fufficientBreach with Cannon.
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... .... ( 97 ) CD The Breadth of the Rampier, exclufive ol theSlopes and Parapet. E The inward Slope. F. Traverfes G Places of Cannon and Mortars. H Lodgments covered Bomb-proof. II Paffage round the Body of the Place. KK Sedtion through FGH. L A Recefs or Slope from MM equal to the Para-pet q, where at L is an Opening up behind theParapet for to fire Mufquets or Piltols, or to throwGranadoes down to MM, or any Spot clofe alongthe Bottom of the Wall AA •, and to a confide-rable Diftance from the Wall into the Ditch. NN The Profile of a new Method of Fortification. O The Ditch. P A Covert Way round the Foot of the Efcarpe. R Paflages under the Rampart to S a fecure Placefor Mufquetry to defend the Covert Ways, Ditch,&c. 7. 8. 9. 10. II. Profile of the Covert Ways. 8. The great Covert Way. 9. Paffage round the Covert Way at the Top of theSteps up which the Mufquetry mount to fire. 10. II. Earth to fecure the Men from Shells, Stones&c. 13. A Gallery round the Place below the C

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