Page:Narrative of a survey of the intertropical and western coasts of Australia, Volume 2.djvu/635

 �APPF. NOIX. �C. consist of a sandy calcareous cement, iadudig water-were portions of reddish ferruginous mar, with fragments shells. NOaTH ISLAIqD, one of Sir Edward Pellew's group.o Coarse siliceous sand, cohereted by ferruginous matter; which, in some places, is in the state of brown hematite. Calcareout incrustations, including fragments of madreporea, and of shells, cemented by splintcry carbonate of lime. Ca,,a-Mama ISLatO, in Liramen's Bight, was found by Mr. Brown to be composed principally of sand-stone. The Slcimens from this place, however, consist of grey sp//ntenj /un'mtone, with tracea of a siaty structure; and of yellowish- grey flint, approaching to caleedony; with a conrac variety of cacholong, containing small neats of quartz crystals. .Onoo ]YaaNu? is composed of taad-stons, of which two ditferent varieties occur among the specimens. A quartzone rldh sand-stone, of moderately ane anain; and a coae reddish compound, consisting almost .exclusively of worn pebbles of quartz, some of which are more han half an inch in diameter, with a few rounded pebblea of ealce- dony. The latter rock is narly identical with that of Simms' Island, near Goulbom's Island on the north count. Ca.ta IaaaNo, Wmmz... sam Ismo, and BUa's IsaNO, are of the same materlain az Groote Eylandt: and sand- tton wa found alao on the wentern shore of ]ava-Mwo Bay. On the shorn of the mainland, oppoaite to Groote landt, a little north of latitude 14 , Mr. Brown olerved the "common sandy calcareous stone, projecting here and there 'in ragged ftYgment."'

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