It was intended that the whole line of the Australian Coast should have been examined and surveyed by Captain Flinders; but the disgraceful and unwarrantable detention of this officer at the Mauritius by the French Governor, General Decaen, prevented the completion of this project. Captain Flinders had, however, previously succeeded in making a most minute and elaborate survey of the whole extent of the South coast, between Cape Leeuwin and Bass Strait; of the East Coast, from Cape Howe to the Northumberland Islands; of the passage through Torres Strait; and of the shores of the Gulf of Carpentaria. The French expedition, under Commodore Baudin, had in the mean time visited some few parts of the West Coast, and skirted the islands which front the North-west Coast, without landing upon, and indeed scarcely seeing, any part of the mainland. The whole of the north, the north-west, and the western shores remained, therefore, to be explored; and in the year 1817, among the numerous voyages of survey and discovery upon which a part of the navy of Great Britain was so honourably and so usefully employed, these Coasts of Australia were not forgotten. An expedition for the purpose of completing the survey of its North and North-west Coast was planned, under the joint direction of the Lords Commissioners of the Admiralty, and the Secretary of State for the Colonies, to the command of which I had the honour of being appointed. The arrangements for providing me with a vessel and crew were made by the latter department; and the Governor of New South Wales was instructed to give up to my use any vessel in the colonial marine establishment that should be deemed capable of performing the service; or, in the event of there being none fit for the purpose, to purchase any suitable one that might be offered for sale. For my guidance I received the following instructions from the Admiralty and the Colonial Department:-- Admiralty Office, 4th February, 1817. SIR, My Lords Commissioners of the Admiralty being informed of the arrangements of Earl Bathurst, His Majesty's principal Secretary of State for the Colonial Department, for employing you in a survey of the unexplored parts of the Coast of New South Wales, have commanded me to express their concurrence therein, and to convey to you the following instructions, to which you are to conform yourself, in addition to those which you may receive from the Secretary of State.