A natural and historical account of the islands of Scilly [electronic resource] : describing their situation, number, extent, Soil, Culture, Produce, Rarities, Towns, Fortifications, Trade, Manufacture, Inhabitants. Their government, laws, customs, Grants, Records, and Antiquities. The Importance of those Islands to the British Trade and Navigation; the Improvements they are capable of; and Directions for all Ships to avoid the Dangers of their Rocks. Illustrated with a new and correct draught of those isles from an actual Survey, in the Year 1744, including the neighbouring Seas, and Sea-Coasts, next the Land's End of Cornwall. To which are added, The Tradition of a Tract of Land, called Lioness, devoured by the Sea, formerly joining those Isles and Cornwall. Of the Cause, Rise, and Disappearance of some Islands. And, lastly, a general account of Cornwall. By Robert Heath, an Officer of his Majesty's Forces, some Time in Garrison, at Scilly.