The pay of Keeper John Hayes was raised to £70 in 1718 so that he would not be obliged to entertain mariners on the island for extra money which he found "" prejudicial to himself as well as to the town of Boston."" In 1719 he asked "" That a great Gun may be placed on Said Island to answer Ships in a Fogg"" and one was supplied that year on which the date 1700 was engraved. The gun is shown on a mezzotint engraving of Boston Light made by Burgess in 1729.