PLATE 19.
Pilum.
Calumet or Pipe of Peace.
Portcullis.
PLUMMET STAND.
MEANS EMPLOYED IN PASSING RIVERS.
Ponton-bridge.
a. side view of ponton; b. end view of ponton joists, flooring plank and timbers fastened upon flooring to keep it in place; c. plan of pontons; d. plan of flooring joists; f. plan of flooring boards, with timbers thereon, near side of floor, to keep it in place.
Ponton.
Ponton.
Raft Complete.
Log Raft.
Flying Bridge.
Flying Bridge.
Holdfasts.
Barrel Pier.
Method of lashing Barrels to Gunnels.