Captain Paterson, of the New South Wales corps, an account of whose journeys in Africa appeared in print some years ago, conceiving that he might be able to penetrate as far as, or even beyond, the western mountains (commonly known in the colony by the name of the Blue Mountains, from the appearance which land so high and distant generally wears), set off from the settlement with a small party of gentlemen (Captain Johnston, Mr. Palmer, and Mr. Laing the assistant-surgeon) well provided with arms, and having provisions and necessaries sufficient for a journey of six weeks, to make the attempt. Boats were sent round to Broken Bay, whence they got into the Hawkesbury, and the fourth day reached as far as Richmond Hill. At this place, in the year 1789, the governor's progress up the river was obstructed by a fall of water, which his boats were too heavy to drag over. This difficulty Captain Paterson overcame by quitting his large boats, and proceeding from Richmond Hill with two that were smaller and lighter. He found that this part of the river carried him to the westward, and into the chasm that divided the high land seen from Richmond Hill. Hither, however, he got with great difficulty and some danger, meeting in the space of about ten miles with not less than five waterfalls, one of which was rather steep, and was running at the rate of ten or twelve miles an hour. Above this part the water was about fifteen yards from side to side, and came down with some rapidity, a fall of rain having swollen the stream. Their navigation was here so intricate, lying between large pieces of rock that had been borne down by torrents, and some stumps of trees which they could not always see, that (after having loosened a plank in one boat, and driven the other upon a stump which forced its way through her bottom) they gave up any further progress, leaving the western mountains to be the object of discovery at some future day. It was supposed that they had proceeded ten miles farther up the river than had ever before been done, and named that part of it which until then had been unseen, 'the Grose;' and a high peak of land, which they had in view in the chasm, they called 'Harrington Peak.' Captain Paterson, as a botanist, was amply rewarded for his labour and disappointment by discovering several new plants. Of the soil in which they grew, he did not, however, speak very favourably. He saw but few natives, and those who did visit them were almost unintelligible to the natives of this place who accompanied him. He entertained a notion that their legs and arms were longer than those of the inhabitants of the coast. As they live by climbing trees, if there really was any such difference, it might perhaps have been occasioned by the custom of hanging by their arms and resting on their feet at the utmost stretch of the body, which they practise from their infancy. The party returned on the 22nd, having been absent about ten days.