Note 34 — Chapter II · Food, Cannibalism, Mammals Fish, Hunting, and Fishing.
N. D'Anvers translation
A discovery made near Abbeville is the most ancient example we have of the use of the mast. Some works being executed at the fortifications of the town, brought to light a boat which must have been some twenty-one feet long. Two projections form part of the planking, leaving between them a rectangular space in which the mast was probably fixed.34