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Show yiii CONTENTS. l'AGR course-Raft of the Atcbafalaya-Drift wood--:-~ew-fonned lakes in Loui- . -Earthquakes in the valley of the Mississlppl-Floods caused by land-slana k . S •t 1 1 Devas slips in the White mountains-Bursting of ala e m Wl zer am- - 183 tations caused hy the Anio at Tivoli CHAPTER XIII Difference between the transporting power of springs and rivers-Many spr·m gs carry matter from below upwards-Miner. al ingred.i ents most abun-clant in springs-Connexion of mineral waters w1th volcam~ phenomena- Calcareous springs-Travertin of the Elsa-Baths of San Vi?none,_ and of San Filippo, near Radicofani-Spheroidal structure in travertm, as m English magnesian limestone-Bulicami of Viterbo-Lake of the ~olfatara, near Rome-Travertin at Cascade of Tivoli-Ferruginous sprmgs-Cementing and colouring property of iron-Brine springs-Carbonated springs -Disintegration of Auvergne granite-Caverns in limestone-Petroleum springs-Pitch lake of Trinidad 198 CHAPTER XIII. Reproductive effects of running water-Division of deltas into lacustrine, mediterranean, and oceanic-Lake deltas-Growth of the delta of the Rhone in the Lake of Geneva-Chronological computations of the age of deltasRecent depo~its in ' Lake Superior-Deltis of inland seas-Rapid shallowing of the Baltic-Arguments for and against the hypothesis of Celsi~sElevated beaches on the coast of Sweden-Marine delta of the Rhone-Vanous proofs of its increase-Stony nature of its deposits-Delta of the. Po, Adige, Isonzo, and other rivers entering the Adriatic-Rapid convers10n of th.at gulf into land-Mineral characters of the new deposits-Delta of the N1le -Its increase since the time of Homer-Its growth why checked at present 220 CHAPTER XIV. Oceanic deltas-Delta. of the Ganges and Burrampooter-Its size, rate of advance, and nature of its deposits ...... Formation and destruction of islandsAbundance of crocodiles-Inundations-Delta of the Mississippi-Deposits of drift wood-Gradual filling up of the Yellow Sea-Rennell's estimate of the mud carried down by the Ganges-Formation of valleys illustrated by t.he growth of deltas-Grouping of new strata in general-Convergence of ~eltas -Conglomerates-Various causes of stratification-Direction of lammre- Remarks on the interchange of land and sea , , • 240 C. ONTENTS.. CHAPTER XV. Destroying and transporting effects of Tides and Currents-Shifting of their position-Diff~renccs in the rise of the tides-Causes of currents-Action of the sea on the British coast-Shetland Islands-Large blocks removedEffects of lightning-Breach caused in a mass of porphyry-Isles reduced to clusters of rocks-Orkney Isles-East coast of Scotland-Stones thrown 1.1p on th~ Bell Rock-East coast ,of Engl~nd-Wilste of the cliffs of Holderness, Norfolk, and Suffolk-Silting up of Estuaries-Origin of submarine forests-Yarmouth estuary-Submarine forests-Suffolk coast-DunwichEssex coast-Estuary of the T_hames-Goodwin Sands-Coast of KentFormation of Straits of Dover-Coast ofHants-Coast of Dorset--Portland -Origin of the Chesel Bank-Cornwall-Lionnesse tradition-Coast of ix l'AGR Brittany 256 CHAPTER XVI. Action of Tides and Currents, continued-Inroads of the sea upon the delta of the Rhine in Holland-Changes in the arms of the Rhine-Estuary of the Bies Bosch, formed in 1421-Formation of the Zuyder Zee, in the 13th century-Islands destroyed-Delta of the Ems converted into a bay-Estuary of the Dollart formed-Encroachment of the sea on the coast of SleswickInroads on the eastern shores of North America-Tidal wave called the Bore -Influence of tides and currents on the mean level of seas-Action of currents on inland lakes and seas-Baltic-Cimbrian deluge-Straits of Gibraltar-Under currents-Shore~ of Meditenanean-Rocks transported on floating icebergs-Dunes of blown sand-Sands of the Libyan Desert-De Luc's natural chronometers 285 C;HAPTER XVII. Reproductive effects of Tides and Currents-Silting up of Estuaries does not compensate the loss of land on the borders of the ocean-Bed of the G('rman Ocean-Composition and extent of its sand-banks-Strata formed by currents on the southern and eastern shores of the Mediterranean-Transportation by currents of the sediment of the Amazon, Orinoco, and Missis-sippi- Stratification-Concluding remarks • 303 CHAPTER XVIII. Division of igneous agents into the volcano and the earthquake-Distinct regions of subterranean disturbance-Region of the Andes-System of volcanos extending from the Aleutian Isles to the Moluccas-Polynesian archi- |
