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Show C_ONTENTS. xii P .~OE structure of the district-Difficulty of ascertaining changes of relative leyel even on the sea-coast-Subsidence of the quay at Messina-Shift or fault in the Ronml Tower of Terranuova-Movement in the stones of two obelisksAlternate opening and closing of fissures-Cnusc of this phenom~non-Large edifices engulphcd-Dimensions of new caverns and fissures-Gradual closing in of rents-Bounding of detache1l masses into the air-Landslips-Buildings trtn1sported ~ntire, tq great 4istances;-Formation of fifty new lakes-Cur· rents of mud-Small funnel-shaped hollows in alluvial plains-Fall of cliffs along the sea-coast-Shore near Scilla inundated-State of Stromboli and Etna during the shocks-Illustration afforde<l by this earthquake of the mode in which valleys are formed 412 CHAPTER XXV. Earthquakes of the eighteenth century, continued-] ava, 1772-Truncation of a lofty cone-Caucasus, 1772-Java, 1771-Colombia, 1766-Chili, 1760 -Azores, 1757-Lisbon, 1755-Sinking down of the quay to the depth of six hundred feet-Shocks felt throughout Europe, N ort.hern Africa, and the West Indies-Great wave-Shocks felt at sea-St. Domingo, 1751-Conception Bay, 17&0-Permanent elevation of the bed of the sea to the height of twenty-four feet-Peru, 1746-Kamtschatka, 1737-Martinique, 1727- Iceland, 1725-Teneriffe, 1706-Java, 1699-Landslips obstruct the Batavian and Tangaran •rivers-Quito, Hi98-Sicily, 1693-Subsidence of land -Moluccas, 1693-Jamaica, 1692-Lat·ge tracts engulphed-Portion of Port Royal sunk from twenty to fifty feet under 'Yater-The Blue Mountains shattered-Reflections on the amount of change in the last one hundred and forty years-Proofs of elevation and subsidence of land on the coast of the Bay of Baire-Evidence of the same afforded by the present state of the Temple of Serapis 436 CHAPTER XXVI. Magnitude of the subterranean changes produced by earthquakes at great depths below the surface-Obscurity of geological phenomena no proof of want of uniformity in the system, because subterranean processes are but little understood-Reasons for presuming the earthquake and volcano to have a common origin-Probable analogy between the agency of steam in the Icelandic geysers, and in volcanos during eruptions-Effects of hydrostatic pressure of high columns of lava-Of the condensn.tion of vapours in the interior of the earth-That some ear thq ua1 { es may be aborti·v e erupt· ions- Why all volcanos are in islands or maritime tracts-Gases evolved from CONTENTS, xiii volcanos-Regular discharge of heat and f PA01l: the subterranean regions-C f th o g~seous and earthy matter from ause o e wave hk r the sea during earthquakes-Difference . • e mo ton and of the retreat of at great depths-Inferences from the suo£ ctrc_umstances of heat and pressure earthquakes-In what matt th .' perfictal changes_ brought about by t k er e reparr of land destr d a es place-Proofs that the 'nki . oye by aqueous causes th . st ng m of the earth' t e forcmg out by earthqu k G . s crus somewhat exceeds a es- eologtcal co that there is no ground £or . nsequences of this hypothesis presummg that th d ' subterranean movements i . . e egree of force exerted by remarks n a gtven hme h as d't m.t m. shed-Concluding Page 35 35 150 154 190 226 326 line 2 13 12 11 6 ERRATA. from top, - bottom, top, do., heading do. bottom fur ·or Alp - law t·ead ancl Of - Loursr.AND = DELTA PJ. 3 Alps laws In LouiSIANA D ELTAS Pl.!l. 460 |
