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45 147&deg;. At Mount Hopeless, near lat. 31&deg;, he mentions quartz rock, and quartz and feldspar. North of New Year's Range, Captain Sturt and Sir T. Mitchell concur in describing the bed of the Bogan as granite, but beyond that neither authority mentions any other rock than ferruginous sandstone. Sir T. Mitchell indeed describes the general features of the Bogan as ferruginous sandstone resting on granite, but beyond its junction with the Darling no granite is seen, and the bed of the Darling as well as the neighbouring eminences of New Year's Range, Oxley's Table land, the D'Urban group, Dunlop's range, Mount M'Pherson, Greenhough's group, and Mount Murchison, the latter of which is in long. 143&deg;, are all described as ferruginous sandstone, indurated sandstone or quartz rock. Mention is made of gravel of quartz pebbles, near the river and even on the summits of the hills, and a clay band three or four miles wide on each side of the river is also described. The surrounding country is everywhere described as a barren plain, with the few scattered eminences mentioned above, which are apparently of no great height or importance, rising from it at intervals.

IV. SOUTH AUSTRALIA.

The most striking and important feature in South Australia, is the hilly chain which runs from Kangaroo Island and Cape Jervis, at first about N.N.E.,