An historical account of the voyages and adventures of Sir Walter Raleigh : with the discoveries and conquests he made for the crown of England : also a particular account of his several attempts for the discovery of gold mines in Guiana, and the reason of the miscarriage ... : to which is added an account how that rich country might now be with ease, possess'd, planted, and secur'd to the British nation ... : humbly proposed to the South-Sea-Company.