Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Ca XXIX.] ISLAND OF ST. PAUL—TEXERIEFE. 643 of such volcanic islands. It may be useful to cite, in illustration of the same subject, the present geographical condition of St. Paul's or Amsterdam Island, in the Indian Ocean, midway between the Cape of Good Hope and Australia. In this case the crater is only a mile in diameter, and 180 feet deep, and the surrounding cliffs were loftiest about 800 feet high, so that iu
Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Ca XXIX.] ISLAND OF ST. PAUL—TEXERIEFE. 643 of such volcanic islands. It may be useful to cite, in illustration of the same subject, the present geographical condition of St. Paul's or Amsterdam Island, in the Indian Ocean, midway between the Cape of Good Hope and Australia. In this case the crater is only a mile in diameter, and 180 feet deep, and the surrounding cliffs were loftiest about 800 feet high, so that iu regard to size such a cone and crater are insignificant when compared to the cone and Caldera of Palm a or to such volcanic domes as Mounts Loa and Kea in the Sandwich Islands. But the Island of St. Paul exemplifies a class of insular volcanoes into which the ocean now enters by a single passage. Every crater must almost 702. View of the Crater of the Island of St. Paul. Ei& 703.
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