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was about one mile wide; but the whole seemed to be too shallow for any thing larger than boats. Amongst the bearings taken from this station, those most essential to the survey were, And from another station, half a mile to the E.S.E., I set This bearing and that of the north-west bluff, formed connecting links in the chain of longitude round the island.

Next day the botanists landed upon Winchilsea Island, and further astronomical observations were taken upon that of Finch; where also a part of the ship's company went to divert themselves, and to wash their linen; and in the evening, we prepared to quit North-west Bay.

A close-grained sand stone, nearly resembling that of Pellew's Group, seems to form the basis of Groote and the neighbouring islands; we found also coral, iron-stone, and quartz. In many places, quartz in almost a crystallised state was sprinkled in grains through the sand stone, and in others, the sand stone itself was partly vitrified. Wherever we landed, the surface was so entirely composed of stone and sand, that the idea of any kind of cultivation could in no wise be assimilated with it; the hills at a little distance from the water side were, however, well covered with wood, and it is not improbable, that there may be vallies in the central parts of Groote Eylandt possessing some degree of fertility. The central hill, which is six or eight hundred feet in elevation, appeared to be not so much as three leagues from the head of North-west Bay, and I was desirous to have made an excursion to the top, to see the interior of the island; but the state of the ship being such as to press us forward with all practicable haste, it was not attempted; nor did I stop to examine particularly the head of the bay, since it appeared to be shallow, and of little interest to navigation.