Chapter IX: Part IX

BATTERIES.—PERMANENT, AND FIELD FORTIFICATION.

Description of Batteries, Embrazures, &c. 223

Dimensions of parapet requisite to be proof 224

Dimensions of an elevated Gun battery 224

Directions for tracing a battery 224

Shelter from an enemy’s fire 225

Epaulments. Elevated sand-bag batteries 226

Half-sunken batteries. Sunken gun batteries 227

Ricochet batteries 227

Fascines 228

Gabions 229

Sod, or turf. Platforms 230

Alderson’s platform 231

Dimensions, and weight of platforms for guns, &c. 232

Carrying, and laying down, Gun, Howitzer, Mortar, and Madras
platforms 233

Breach. To burst open gates of fortresses, &c. 233

FORTIFICATION, description of 234

Command. Rampart. Interior slope. Terreplein. Parapet.
Banquette. Revetment. Berm 234

Tablette. Cordon. Escarp 235

Counterscarp. Faces. Flank. Bastions. Curtain. Front of
fortification. Ditch. Covered way. Glacis. Places of
arms. Sally-ports. Traverses 235

Citadel 236

Esplanade. Body of the place. Outworks. Tenaille. Ravelin
Horn work. Crown-work. Lunettes. Tenaillons. Flèche.
Caponiere. Cunette. Batardeau. Ramp. Cavalier 236

Parallels. Zig-zags, or roads of communication. Redan.
Redoubt. Star Fort. Têtes de pont. Lines. Epaulment.
Loop holes. Palisades. Fraises. Chevaux de frise. Abattis.
Hurdles. Trous de loup 237

PERMANENT FORTIFICATION 238

Remarks, and general rules 238

Vauban’s first system.—Construction 240

Profile, or section of Vauban’s first system 242

Modern system, names of parts 243

FIELD FORTIFICATION 244

Remarks, and general rules 244

Capacity of field works 245

To find the quantity of earth for parapets, and banquettes 245

To find, rapidly, ditto, ditto 245

To compute the content of the ditch 245

To find the breadth of the ditch 245

Construction of field works 246

The redan. The lunette. The square redoubt. The pentagonal
redoubt. The hexagonal redoubt. The circular
redoubt. The star fort. The field fort with bastions, and
half bastions 246

The bridge head, or tête du pont 247

Lines. Bridges. Passages. Traverses 247

Table—Dimensions of parapets, ditches, &c., of field works 248

Simple methods of tracing field works on the ground. Square
redoubt. Pentagonal redoubt. Hexagonal redoubt. Octagonal
redoubt. Front of fortification 249

PART X.

BRIDGES, AND PONTOONS.—SCALING LADDERS.

BRIDGES.—To find number of planks to form a float 250

To find number of casks to form a raft 250

To find the number of Boats, or Pontoons
required to support a given weight 250

PONTOONS.—Large pontoons 251

Small pontoons 252

SCALING LADDERS 253

PART XI.

FIREWORKS.

Candles, Roman, Blue. Crackers 254

Earthquake, artificial. Fires of various colours. Wildfire.
Gerbes 255

Iron filings. Iron sand 256

Leaders. Marroons. Mealing gunpowder. Paste for representing
animals 257

Portfires for illuminations. Rain, gold, or silver. Rockets,
line 258

Rockets, signal 259

Saltpetre pulverized 260

Serpents, or squibs. Shells. Showers of fire 261

Speckie. Spur fire. Suns, or wheels 262

Touch paper. Wheels, pin, or Catherine 264