INSTRUCTIONS.

In connection with the preceding general instructions to Captain Stanley, it will be necessary to give a portion of those more explicit directions furnished by the Hydrographer, Rear-Admiral Sir Francis Beaufort.

EXTRACTS FROM HYDROGRAPHIC INSTRUCTIONS FOR CAPTAIN STANLEY.

On your arrival at Sydney you should take the earliest opportunity of communicating with Lieutenant Yule, in order to learn how much has been executed, by the Bramble and her tender, of the orders which he received from Captain Blackwood, and you will no doubt avail yourself of his long experience in those seas in digesting your plan of future operations.

A letter from the Colonial Office having recently apprised their Lordships that it is the intention of her Majesty's Government to form a new settlement at Hervey Bay, and having requested that it may be duly examined with that view, your first undertaking, after leaving Sydney, should be to repair to that place, and to make an efficient survey of the whole bay, extending it down through the channel into Wide Bay, and marking the best anchorages, the most convenient landing-places, and the several parts where water may be found. And as it appears that Colonel Barney, R.E. is engaged in the same inquiry, it will be prudent to act in concert with him, and to give him a copy of such parts of it as may suit his purposes.

In your way to this district, and indeed on every part of the shores of Australia, you should lose no fair opportunity of verifying the positions--of multiplying the soundings--and of improving the smaller details of the coast as laid down by Captain P.P. King in his excellent Survey, but which he had not time or means to effect with the same accuracy that will be in your power. By carrying on this system of correction and improvement in our present charts from Hervey Bay along the narrow navigation which is generally known by the name of the Inshore Passage, between the coast and the Barrier Reefs, a very great benefit will be conferred on those masters of vessels who would be the more readily inclined to adopt that channel, if certain parts of it were so clearly delineated, and the soundings so spread on either side of the tracks, that they could sometimes continue under sail during the night. However necessary it was, and is, to contribute as much as possible to the safety of those vessels who choose the outer voyage by the Barrier Reefs, it is not the less our duty to facilitate the navigation of the Inshore Passage to all vessels who prefer its tranquillity and security to the risk of the former; and your labours for the accomplishment of this object will prove to be of peculiar importance when steam communication between Singapore and Sydney shall be established.

In the general and searching examination of those parts of the Coral Sea which are likely to be traversed by ships steering for Torres Strait, you will be obliged to regulate your movements by the periodic changes of the weather and monsoons--probably beginning to windward, and dropping gently to leeward by close and well-arranged traverses, and by spreading out your three vessels to a convenient distance apart. This great expanse of sea, which may be said to stretch from Lord Howe's Island to New Caledonia and to the Louisiade, would no doubt require many years work in order to accomplish that object; but, by dividing it into definite zones or squares, and by fully sifting those which you may undertake, a certain quantity of distinct knowledge will be gained. Navigators in crossing those zones will then be sure of their safety, and future surveyors will know exactly on what parts to expend their labours.

In carefully exploring the northernmost, and apparently the safest entrance from the Pacific, which may be called Bligh's Channel, you will connect the islands with a survey of the coast of New Guinea, as well as with the edge of the Warrior Reef, and as there are throughout moderate soundings, you will probably be able to draw up such clear directions as will enable the mariner to use it in moderate weather by night, and to beat through it at all times. Characteristic views of the coast and hills of New Guinea, as well as of each island, both from the eastward and westward, will greatly assist him by the immediate certainty of his landfall, and will also materially add to your means of giving proper marks and bearings for avoiding the dangers.

In Torres Strait you will find much to do--not only has a new rock been discovered in the middle of the Endeavour Channel, but the water in its western opening is only four and a half fathoms, and there seems no reason for not believing that Prince of Wales Channel is safer, easier, and more direct. But before we can decide upon that point, an accurate survey must be made of it, throughout its length and breadth, including the adjacent islands, and showing their anchorages and watering-places, as well as the nature of the soil, and the kind of timber they produce, along with a full investigation of the tides.

The connection of that Strait with Bligh's Farewell should also be examined, for many circumstances may render it highly necessary that the Admiralty should be made aware of what means there are to pass from one ocean to the other, without being observed from Cape York.

On this latter Cape Government have for some time contemplated a station, and it will therefore be very desirable to fix upon a convenient but secure anchorage in its neighbourhood. Our latest surveys do not show much promise of finding such a port; but, perhaps, inside the reefs beyond Peak Point, or more likely between Albany Island and the main, a snug place may be discovered for that purpose.

In tracing out the approach to Bligh's Farewell, you will be led to examine the southern face of New Guinea as far as Cape Valsche; but after verifying the position of this point, it will be prudent to quit the shores of that island, and not to meddle with any part of it over which the Dutch claim jurisdiction.

When you have arrived at this distant point, the south-east monsoon will probably render it necessary to repair to Port Essington for such supplies as may by previous arrangement have been sent there for you from Sydney; or perhaps unforeseen events might render it more expedient to proceed for refreshments to some of the islands in the Arafura Sea, or it is possible to one of the Dutch settlements in Java. And in either of these two latter cases you should make a complete survey of the island to which you have proceeded, or you should select any one of the eastern passages from Bally to Floris most convenient to the object you have in view, and then lay it down with precision. Of the many well-known passages between the innumerable islands of that great Archipelago, there is not one which has ever been charted with plausible accuracy; and it cannot be too strongly impressed on your mind that hydrography is better served by one accurate chart than by ten approximate sketches.

The several objects of this highly interesting expedition having thus been briefly enumerated, I have only to remind you that their Lordships do not prescribe to you the order in which they are to be executed, leaving it to your own prudence, and to your experience in those climates, so to arrange them that each part of your survey shall be complete in itself, and that each step in your progress shall be conducive to its successor.

Signed: F. BEAUFORT,
HYDROGRAPHER.

SAIL FROM PLYMOUTH.

The Rattlesnake left Spithead on December 3rd, and on the 11th took her final departure from Plymouth, which place we had called at to complete her fittings, swing the ship a second time to ascertain the amount of local attraction, and receive some specie for the Cape of Good Hope and the Mauritius. Being favoured by strong northerly winds, we reached Madeira on December 18th, after a quick, but most uncomfortable passage; during the greater part of which the main and lower decks were partially flooded, owing to the inefficiency