A voyage round the world, [electronic resource] : In the years M,DCC,XL, I, II, III, IV. By George Anson, Esq; now Lord Anson, Commander in Chief of a squadron of His Majesty's ships, sent upon an expedition to the South Sea. Compiled from his papers and materials, by Richard Walter, M.A. Chaplain of the ship the Centurion in that expedition