open sea was an undertaking of so much intricacy that seamen were accustomed to call it "threading the needle." Even Cook, prince of navigators as he was, failed in the attempt. Flinders persevered till he discovered a safe gap in the mighty rampart, and showed succeeding navigators an easy escape from a grave difficulty. An outside course was then followed to the extreme north. Having now passed through the Endeavour Strait, Flinders came to anchor in the Gulf of Carpentaria, where he found a new scene for his energies and a rich field of discovery awaiting him. The Gulf of Carpentaria had been early visited by the Dutch navigators, but its exploration--if this word could be applied at all--had been conducted in a desultory and piecemeal fashion. Its turn had come at last, and the same painstaking service was to be rendered here which had made the south and eastern coasts so correctly known. Flinders found the gulf defined on the chart by a vague and hesitating coast-line, which turned out, in most cases, to be more imaginary than according to nature, and he left it so accurately described that his successors have been able to add little to his careful investigations. In this patient research four months were consumed, during which period he examined the whole coast from end to end, including Arnheim Bay. The three seaboards of Australia, south, east, and north, had now been explored in the _Investigator_. It need not, therefore, occasion surprise to hear of her showing signs of decay. This matter had to be attended to before commencing the survey of the western coast, which was meant to be as thorough as that of the other three had been. After making a call at Timor with despatches, a rapid run was made for Port Jackson by the western coast, but out of sight of land. Cape Leeuwin, the point from which the circumnavigation had started, was reached on the 13th of May, 1803, and thus the heroic undertaking was virtually accomplished. Shipwreck, tragic sufferings, and diabolical treachery cut off the possibility of any further exploration of the western coast by Matthew Flinders. The work which was thus left imperfect through a long series of misfortunes was afterwards resumed, and very satisfactorily completed, by another distinguished navigator, Captain, and subsequently Admiral King. He played a prominent part in this period of our history, and was much beloved for his sterling qualities both of head and heart. He made four voyages to the western coast, in every one of which excellent service was rendered to the cause of exploration. The following interesting abstract of his discoveries has been kindly furnished by his son, the Hon. P. G. King, M.L.C.:--