. The earth and its inhabitants .. . Lfibb :F Greenwich Depths. 0 to 10 Fathoms. 10 to 25 Fathoms. 25 to 100 Fathoms. 100 Fathoms and upwards. 120 Miles. the water is nowhere more than eleven or twelve, while the average scarcely exceeds seven fathoms. It was shown by the accurate surveys of the Fly and Bramble (1842—1847) that, even by keeping to the windings of the deepest channel, a vessel drawing over 30 feet could only pass through in perfectly smooth water. The rocky islets in this strait, whether isolated or grouped in clusters, consist exclusively of porphyries or syenites, like the ro
. The earth and its inhabitants .. . Lfibb :F Greenwich Depths. 0 to 10 Fathoms. 10 to 25 Fathoms. 25 to 100 Fathoms. 100 Fathoms and upwards. 120 Miles. the water is nowhere more than eleven or twelve, while the average scarcely exceeds seven fathoms. It was shown by the accurate surveys of the Fly and Bramble (1842—1847) that, even by keeping to the windings of the deepest channel, a vessel drawing over 30 feet could only pass through in perfectly smooth water. The rocky islets in this strait, whether isolated or grouped in clusters, consist exclusively of porphyries or syenites, like the rocks in the northern peninsula of Queensland, of which they evidently form a seaward extension. East of these reef-fringed islets, between which flow channels perfectly free
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeography, bookyear18
