A Voyage to the South Atlantic and round Cape Horn into the Pacific Ocean, for the purpose of extending the Spermaceti Whale Fisheries, and other objects of commerce, by ascertaining the ports, bays, harbours, and anchoring births, in certain islands and coasts in those seas at which the British merchants might be refitted: Undertaken and performed By Captain James Colnett, of the Royal Navy, in the ship Rattler.