. Supplement to the appendix of Captain Parry's voyage for the discovery of a north-west passage in the years 1819-20 [microform] : containing an account of the subjects of natural history. Natural history; Sciences naturelles. cclvi also to exist here in the shape of a conglomerate. Some specimens from Table-hill and its neighbourhood, as also from Liddon's Gulf, are marked with the impressions of bivalves, particularly of a small, flat, ovate cuneiform species of Avjcula, of which a figure will be given elsewhere under the name o( A. jSlelvilliana. One of the fragments of compact
. Supplement to the appendix of Captain Parry's voyage for the discovery of a north-west passage in the years 1819-20 [microform] : containing an account of the subjects of natural history. Natural history; Sciences naturelles. cclvi also to exist here in the shape of a conglomerate. Some specimens from Table-hill and its neighbourhood, as also from Liddon's Gulf, are marked with the impressions of bivalves, particularly of a small, flat, ovate cuneiform species of Avjcula, of which a figure will be given elsewhere under the name o( A. jSlelvilliana. One of the fragments of compact brown ironstone exhibits a glossy surface and fracture, approaching to librous. There are also specimens of sandstone which exhibit a transition into a kind of brown ironstone: in this state it is generally seen as tabular pieces, similar to that which in some parts of Norway, ^'C, is deposited in beds of a few inches* thickness in sandstone, into which it ]>asses. In the same manner the hydrous oxydc of iron is seen to penetrate clay which here and there slightly cftervesces with acids, and is therefore a ferru- ginous marl. There arc a few varieties of slate-clay, such as might be expected to occur with coal and sand-stone formations : they are very soft, of ash-grey, and greonish-grcy colour, and were found overlaid by sandstone at the bottom of ravines. r The limestone from Wclvillc Island, especially that from Table-hill, bears the character bcloiiging to that of the oldest fietz or transition formation. The secondary fossils which it contains arc chiefly bivalve shells and coral- lines. None of these, however, are perfect enough to admit of the deter- mination of the genera to which they respectively belong, except a small species of Terebratula of that division which comprehends the Petunculi of earlier writers on petrifactions, and a species of Favosites, which docs not appear to diflcr from F. Gothlamiictis. There are a few specimens among those from Winter Harbour
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectsciencesn
