We have, therefore, thought proper to appoint you to the command of the Rattlesnake, for the purpose of carrying out these objects; and you are here by required and directed, when that ship is in every respect ready for sea, to proceed in her to Madeira for the verification of your chronometers--from thence to Simon's Bay at the Cape of Good Hope, for a supply of water, and to land the 50,000 pounds you have been ordered to convey to that colony; then to make the best of your way to the Mauritius, to land the treasure (15,000 pounds) entrusted to your charge for that island; and having so done, to proceed to King George Sound for the purpose of carrying its exact meridian distance to Sydney, where you will lose no time in preparing for the execution of the important service entrusted to you. The several objects of that service have been drawn up under our direction by our Hydrographer; but notwithstanding the order in which they are placed, we leave to your own discretion the several periods of their performance, and likewise the times of your return to Sydney to revictual and refit--being satisfied that your zeal in pushing forward the survey will never outstrip your attention to the health and comfort of your crew. You will take the Bramble and her tender, the Castlereagh, under your orders, and employ them in those places which require vessels of a lighter draft of water than the Rattlesnake. They are to be attached as tenders to the Rattlesnake, and to be manned from that ship; and such of the present crew of the Bramble as may have served five years continuously, and volunteer to remain on the surveying service in Australia, are to be entered in the Rattlesnake under the provisions of the Act of Parliament. The books of the Bramble are to be closed, and she is to be considered as no longer in commission; and you are here by authorised, after being joined by her and by the Castlereagh, to enter ten supernumerary seaman for wages and victuals in the Rattlesnake (making her total complement 190) to enable you effectively to man the said two tenders. In stretching off from the Barrier Reefs to the eastward, in order to explore the safety of the sea intervening between them and Louisiade and New Guinea, you will have occasion to approach those shores, in which case you must be constantly on your guard against the treacherous disposition of their inhabitants, all barter for refreshments should be conducted under the eye of an officer, and every pains be taken to avoid giving any just cause of offence to their prejudices, especially with respect to their women. A naturalist having been permitted to accompany you, every reasonable facility is to be given him in making and preserving his collections.