Before revision: These were likely first compiled by professional mariners and pilots, probably as a mnemonic set of notes for their own personal use.Taylor, (1956: p. 103); Parry (1963: p. 85)
After revision: .These were likely first compiled by professional mariners and pilots, probably as a mnemonic set of notes for their own personal use.Taylor, (1956: p. 103); Parry (1963: p. 85)