PLATE 2.
Block-house.
Block-house.
Bill Hook, 1 lb 12 oz.
1′ 41⁄2″
Bastion.
A. bastion; a, curtain angle; b, shoulder angle; c, salient angle; a a, gorge; a b, flank; a d, curtain; b c, face.
Gatling Blind.
Barricade.
Bucklers.
1. Targe. 2. Franc.
Bridle.
Trestle Bridge.
Trestle Bridge.
BULLET-PROOF GATE.
Trestle Bridge.
Lashing.
Frame Bridge.
Sling Bridge.
Tension Bridge.
Frame Bridge.
Suspension Bridge.
Holdfasts.
Suspension Bridge.