. The Arctic world: its plants, animals and natural phenomena [microform] : with a historical sketch of Arctic discovery down to the British Polar Expedition: 1875-76. British Polar Expedition, 1875-76; British Polar Expedition, 1875-76; Zoology; Zoologie. (ILAOIEHH AND ICEBEHOS. 47 been its biith-pluce, until iliirly Inunchcd into tlvo depths of ocean, and, "after Ionothcsis naturally gave rise to many theories, not less ingenious than startling, as to the eft'ect an incessant accmnulation of ice must ])'oduee on the globe itself; and St. Pierre hinted at the possibility of the huge &quo
. The Arctic world: its plants, animals and natural phenomena [microform] : with a historical sketch of Arctic discovery down to the British Polar Expedition: 1875-76. British Polar Expedition, 1875-76; British Polar Expedition, 1875-76; Zoology; Zoologie. (ILAOIEHH AND ICEBEHOS. 47 been its biith-pluce, until iliirly Inunchcd into tlvo depths of ocean, and, "after Ionothcsis naturally gave rise to many theories, not less ingenious than startling, as to the eft'ect an incessant accmnulation of ice must ])'oduee on the globe itself; and St. Pierre hinted at the possibility of the huge "domes of ice"—which, as he supposed, rose to an immense height in the keen frosty heavens of the Prdes—suddenly launching towards the Equator, dissolving under a trojjical sun, and resulting in a second deluge! In simple language Professor Tyndall furnishes an explanation of the origin of icebergs, which we may transfer to these pages as supplementary to the preceding remarks. What is their origin ? he asks; and he rej)lies, as we have done, the Arctic glaciers. From the mountains in the interior the indurated snows slide into the valleys, and fill them with ice. The glaciers thus created move, like the Swiss ones, incessantly downward. I3ut tlie Arctic glaciers descend to the sea, and even enter it, frequently ploughing up its bottom into submarine moraines. Under- mined by the continuous action of the waves, and unable to resist the pressure of their own weight, they break across, and discharge enormous masses into the ocean. Some of these drift on the adjacent shores, and often maintain them- selves for years. Others float away to the southward, and pass into the broad Atlantic, where they are finally dissolved. But a vast amount of heat is demanded for the simple liquefaction of ice, and the melting of icebergs is on this account so slow that, when large, they sometimes maintain themselves till they have been drifted two thousand miles from their place of birth.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1876
