Before giving an account of this voyage of Captain Flinders, we shall abridge, from the Introduction prefixed to it, his clear and methodical account of the progressive discoveries which have been made on the coast of New Holland, and of what was still to be explored. He particularly dwelt on the advantages that would result from a practicable passage through Torres' Strait; if this could be discovered, it would shorten the usual route by the north of New Guinea, or the Eastern Islands, in the voyage to India and China. The immense gulf of Carpentaria was unknown, except a very small portion of its eastern side. The lands called after Arnheim and Van Dieman also required and deserved a minute investigation, especially the bays, shoals, islands, and coasts of the former, and the northern part of the latter. The north-west coast had not been examined since the time of Dampier, who was of opinion that the northern portion of New Holland was separated from the lands to the northward by a strait. The existence of such a strait, Captain Flinders completely disproved.
With respect to the south coast, at least 250 leagues were unexplored. Captain Flinders had examined with considerable care and minuteness the east coast and Van Dieman's Land; but there were still several openings which required to be better explored.
Such were the principal objects which Captain Flinders had in view in his voyage; and no person could have been found better qualified to accomplish these objects. On the 18th of July, 1801, he sailed from England in the Investigator, of 334 tons: there were on board, beside the proper and adequate complement of men, an astronomer, a naturalist, a natural history painter, a landscape painter, a gardener, and a miner. As soon as he approached the south coast of New Holland, he immediately began his examination of the coasts, islands, and inlets of that large portion of it, called Nuyts' Land; he particularly examined all that part of the coast, which lies between the limit of the discoveries of Nuyts and Vancouver, and the eastern extremity of Bass' Straits, where he met a French ship, employed on the same object. In the month of July, 1802, he left Port Jackson, whither he had gone to refit, and sailing through Torres' Straits in 36 hours, he arrived in the Gulf of Carpentaria in the latter end of the season. In the course of this part of his voyage, he examined Northumberland and Cumberland islands, and the great barrier reefs of coral rock; and every part of the eastern side of the Gulf of Carpentaria; not a cape, creek, bay, or island on this coast of the gulf escaped his notice and examination. It was his intention to have pursued the same mode of close and minute examination: "following the land so closely, that the washing of the surf upon it should be visible, and no opening nor any thing of importance escape notice;" but he was prevented by ascertaining that the vessel was in such a crazy state, that, though in fine weather she might hold together for six months longer, yet she was by no means fit for such an undertaking. After much deliberation what conduct he ought to pursue under these circumstances, as it was impossible, with such a vessel, he could at that season return to Port Jackson by the west route, in consequence of the monsoon (and the stormy weather would render the east passage equally improper) he resolved to finish the survey of the Gulf of Carpentaria. This occupied him three months: at the end of this period he was obliged, by the sickness of his crew, to sail for Timor, which he reached on the 31st of March, 1803.
As the Investigator was no longer fit for service, she was condemned. Captain Flinders resolved, as he could not finish the survey, to return to England, in order to lay his journals and charts before the Admiralty: he accordingly embarked on board the Porpoise store ship, which, in company with the Cato and Bridgwater, bound to Batavia, sailed in August, 1803. The Porpoise and Cato were wrecked on a reef of rocks nearly 800 miles from Botany Bay: most of the charts, logs, and astronomical observations were saved; but the rare plants, as well as the dried specimens, were lost or destroyed. On the 26th of August, Captain Flinders left the reef in the cutter, and after a passage of considerable danger, reached Port Jackson on the 8th of September. As he was extremely anxious to lodge his papers as soon as possible with the Lords of the Admiralty, he embarked from Port Jackson in a vessel, something less than a Gravesend passage boat, being only 29 tons burden. Even in such a vessel, Captain Flinders did not lose sight of the objects nearest his heart: he passed through Torres' Straits, examined Pandora's entrance, explored new channels among the coral reefs, examined Prince of Wales Island, crossed the Gulf of Carpentaria, and after anchoring at some islands on the western side of the gulf, directed his route to Timor: here he refitted his vessel, and then sailed for the Isle of France, where it was absolutely necessary he should touch, in order that she might undergo a repair, as she was very leaky. Though he possessed passports from the French government, he was detained at the Isle of France, under the absurd pretence that he was a spy. All his books, charts, and papers were seized; and he himself was kept a prisoner in a miserable room for nearly four months. He was afterwards removed to the garden prison, a situation not so uncomfortable and prejudicial to his health as that from which he was taken; at length, in consequence of an application from the Royal Society to the National Institute, the French government sent an order for his liberation; but it was not received, or, at least, it was not acted upon till the year 1810; for it was not till that year that Captain Flinders was permitted to leave the Isle of France: he arrived in England on the 24th of October of that year.
There are few voyages from which more important accessions to geographical knowledge have been derived, than from this voyage of Captain Flinders, especially when we reflect on the great probability that New Holland will soon rank high in population and wealth. Before his voyage, it was doubtful, whether New Holland was not divided into two great islands, by a strait passing between Bass' Straits and the Gulf of Carpentaria. Captain Flinders has put an end to all doubts on this point: he examined the coast in the closest and most accurate manner: he found indeed two great openings; these he sailed up to their termination; and, consequently, as there were no other openings, and these were mere inlets, New Holland can no longer be supposed to be divided into two great islands, but must be regarded as forming one very large one; or, rather, from its immense size, a species of continent. He made another important and singular discovery, viz. that there are either no rivers of any magnitude in New Holland, or that if there be such, they do not find their way to the sea coast. This country seems also very deficient in good and safe ports: in his survey of the south coast, he found only one. He completed the survey of the whole eastern coast; of Bass's Straits and Van Dieman's Land, observing very carefully every thing relative to the rocks, shoals, tides, winds, currents, &c. Coral reefs, which are so common in most parts of the Pacific, and which, owing their origin entirely to worms of the minutest size, gradually become extensive islands, stretch along the eastern coast of New Holland. These were examined with great care by Captain Flinders: he found that they had nearly blocked up the passage through Torres' Straits, so that it required great care and caution to pass it with safety. But one of the most important results of this voyage respects the survey of the Gulf of Carpentaria; previously the extent and bearings of this gulf were not known; but from Captain Flinders's geography we have received an accurate and full survey of it. Its extent was ascertained to be 5 1/2 degrees of longitude, and 7 degrees of latitude; and its circuit nearly 400 leagues. On the coast of this gulf he found a singular trade carried on. Sixty proas, each about the burden of 25 tons, and carrying as many men, were fitted out by the Rajah of Boni, and sent to catch a small animal which lives at the bottom of the sea, called the sea slug, or biche de mer. When caught, they are split, boiled, and dried in the sun, and then carried to Timorlaot, when the Chinese purchase them: 100,000 of these animals is the usual cargo of each proa, and they bring from 2000 to 4000 Spanish dollars.
Notwithstanding the English had had settlements in New Holland for upwards of 26 years, little progress had been made in exploring the interior of the country even in the immediate vicinity of Botany Bay. It was supposed that a passage across the Blue Mountains, which are within sight of that settlement, opposed insurmountable obstacles. At length, about the end of the year 1813, the Blue Mountains were crossed for the first time, by Mr. Evans, the deputy surveyor of the colony. He found a fertile and pleasant district, and the streams which took their rise in the Blue Mountains, running to the westward; to one of the most considerable of these he gave the name of Macquarrie river; the course of this river he pursued for ten days. On his return to the colony, the governor, Mr. Macquarrie ordered that a road should be made across the mountains; this extended 100 miles, and was completed in 1815. Mr. Evans soon afterwards discovered another river, which he called the Lachlan.
As it was of great consequence to trace these rivers, and likewise to examine the country to the west of the Blue Mountains more accurately, and to a greater distance than it had been done, the governor ordered two expeditions to be undertaken. Lieutenant Oxley, the surveyor-general of the colony had the command of both. It does not fall within our plan or limits to follow him in these journeys; we shall therefore confine ourselves to an outline of the result of his discoveries. He ascertained that the country in general is very unfertile: the Lachlan he traced, till it seemed to loose itself in a multitude of branches among marshy flats. "Perhaps," observes Lieutenant Oxley, "there is no river, the history of which is known, that presents so remarkable a termination as the present: its course, in a strait line from its source to its termination, exceeds 500 miles, and including its windings, it may fairly be calculated to run at least 1200 miles; during all which passage, through such a vast extent of country, it does not receive a single stream in addition to what it derives from its sources in the Eastern mountains."--"One tree, one soil, one water, and one description of bird, fish, or animal, prevails alike for ten miles, and for 100." There were, however, tracks, especially where the limestone formation prevailed, of great beauty and fertility; but these were comparatively rare and of small extent. Level, bare, sandy wastes, destitute of water, or morasses and swamps, which would not support them, formed by far the greatest part of the country through which they travelled.
The second object Lieutenant Oxley had in view was the survey of the course of the Macquarrie river; this he knew to be to the north-west of the Lachlan. In crossing from the banks of the latter in search of the former, they reached a beautiful valley; in the centre of which flowed a clear and strong rivulet. This they traced till it joined a large river, which they ascertained to be the Macquarrie. From this point to Bathurst Plains, the country was rich and beautiful.
As from the size of the Macquarrie where they fell in with it, it seemed probable that it either communicated with the sea itself or flowed into a river which did, the governor sent Lieutenant Oxley on another expedition to trace its course, and thus settle this point. For twelve days the country was rich and beautiful: the river was wide, deep, and navigable. The country then changed its character: no hill was to be seen; on all sides it was as level and uninteresting as that through which thay had traced the Lachlan in their former journey. Soon afterwards it overflowed its banks; and as the country was very flat, it spread over a vast extent. Under these circumstances, Lieutenant Oxley proceeded down it in a boat for thirty miles, till he lost sight of land and trees. About four miles farther it lost all appearance of a river; but he was not able to continue his route, and was obliged to return, without having ascertained whether this great inland lake, into which the Macquarrie fell, was a salt or fresh water lake.
On his return he crossed the highest point of the mountains which divides the waters running west from those which run into the east; the most elevated peak he calculates to be from 6000 to 7000 feet. Here he found a river rising, which flowed to the east; and following it, he arrived at the place where it fell into the ocean.