Note 54 — Chapter VI
Reading edition
It was of stone; a quadrangle seven hundred and thirty-seven feet in compass without the outer walls, one hundred and eight feet square within the inner ones: pierced with embrasures for twenty-eight cannons, and mounting fourteen, six being eighteen-pounders. The south wall fronting the sea was twenty-two feet high, and six feet thick at the ports. The great flanker, or round tower, at the west end of the line was twenty-nine feet high. It stood about a score of rods from high-water mark.—Mather, vol. ii., p. 537.