. The polar and tropical worlds [microform] : a description of man and nature in the polar and equatorial regions of the globe : two volumes in one : embracing also an account of the expeditions of all the Arctic explorers from the discovery of Iceland, over one thousand years ago, to Hall's last expedition in the northern world, together with the wonderful discoveries and adventures of Agassiz, Livingstone, Wallace, and other distinguished travelers in the tropical countries. Arctic races; Tropics; Natural history; Races arctiques; Régions tropicales; Sciences naturelles; genealogy. 70 THE PO


. The polar and tropical worlds [microform] : a description of man and nature in the polar and equatorial regions of the globe : two volumes in one : embracing also an account of the expeditions of all the Arctic explorers from the discovery of Iceland, over one thousand years ago, to Hall's last expedition in the northern world, together with the wonderful discoveries and adventures of Agassiz, Livingstone, Wallace, and other distinguished travelers in the tropical countries. Arctic races; Tropics; Natural history; Races arctiques; Régions tropicales; Sciences naturelles; genealogy. 70 THE POLAR WORLD. "Five or six miles Iteyoiid tlie Ilrafnnjjtja, near the summit of a dividing ridf^e, we eame upon a very singular volcanic formation, called the Tintron. It stands, a little to the right of the trail, on a rise of scoria and tnirnt earth, from which jt juts u|) in rugged relief to the height of twenty or thirty feet. This is, strictly speaking, a huge clinker, not unlike what comes out of a grate ^haid, glassy in spots, and scraggy all over. The top part is shaped like a sliell; in the centre is a hole about three feel, in diaujeter, which opens into a vast Kuhterranean cavity of unknown depth. Whether the Tintron is an ex- tinct crater, through which fires shot out of the earth in by-gone times, or an is(>late vast commotion shook the foun- dations of the island ; and huhlding up sourcfs far away amid the inland hills, a iicry <leluge must have rushed down between tluir , until, esca- jiing from the narrower gorgi's, it found space to spread itself info one broad sliict of molten stone over an entire district of country, reducing its varied surface to one vast blackened level. One of two things then occiirreil: either,. the vitrified mass contracting as it cooled, tin; centre area of fifty square miles (the pres'iit plain of Tlii'igvitlhi) burst asjuider at either side from thi ailjoining iilateau,an!- nries, to nii'.fk the limits of the disr


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Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory