Aide-mémoire to the Military Sciences: Framed from Contributions of Officers and Others Connected with the Different Services, Volume 2J. Weale, 1860 |
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acid angle artillery attack axis barometer bastion battery beds besieger centre charge clay column construction copper counterguard counterscarp crater defence deposits diameter direction distance ditch earth effect elevation employed epoch equal escarp explosion feet fire flank force formation Fortification front gabion gallery glacis gneiss granite ground gun cotton gunpowder heat height High Holborn horizontal horse howitzer inches instrument iron John Weale length LENOX AND TILDEN lime limestone line of least loopholes Lowry magnetic Magnetometer masonry means meridian metal mineral mines mould mould box necessary nitric acid observations observatory obtained oolitic Ordnance parapet passing placed Plate porphyry portion position powder produced PUBLIC LIBRARY ASTOR pyroxyle quantity ravelin rear redoubt revetment rocks saltpetre sand sandstone schists screw Section shells side Silurian strata sufficient sulphuric surface temperature thickness TILDEN FOUNDATIONS troops trunnions vertical wall wheel whilst wire yards YORK PUBLIC LIBRARY