NDEX. 



733 



Earthquakes in South America, unequal action 

 of, at points contemporaneously affected, Juan 

 Fernandez and main coast, 1835, 602, 618. 



Chiloe, Cal- 



buco, and MellipuIIi, 605, 616, 618. 



Lima, Cailao, 



and Guancavelica, 606 note. 

 ■ remarks of the 



natives and Humboldt respecting the unequal 



action of, 606. 

 • cause of, ad- 



vanced by Mr. Darwin, 615. 



elongated areas, 617, 621. 



nature of, 615. 

 generally affect 



sometnnes ac- 



companied by elevations of land, 61) 



drawn from, 61! 



conclusions 



direction of the 



shocks at Concepcion 1 75 1 and 1 835, 602, 620. 

 Chiloe in 1835, 602. 



the Caraccas, 617. 



riodical returns of, 612. 



instances of pe- 



remarks on a 



supposed determined relation of, with respect 

 to time, 612. 

 ■■ though appa- 



rently sudden are often parts of a prolonged 

 action, 613 and note. 

 ■ difference be- 



tween, and those of Calabria and Italy, 622. 



bable cause of the difference, 622. 



pro- 



operation of, 



compared to the yielding of ice beneath a mo- 

 ving weight, 607, 620. 



probable difference between those 



due to cavities, or to the ejection of igneous 

 matter, 622. 



and volcanos, apparent connexion 



of in South America, 602, See volcanos and 

 earthquakes. 



Easington Heights, description of the upper lias 

 and marlstone of, 215. 



section of the strata at, 221. 



list of fossils from, 219. 



East Bergholt, sections of wells at, 371. 



Echinostachys oblongus, notice of the occurrence 

 of, at Hadley, 340. 



Edwards Piece, Hadley, coal-pit section at, 480. 



Egerton, Sir P. Grey, Bart., on certain peculiari- 

 ties in the cervical vertebrae of the Ichthyosau- 

 rus, hitherto unnoticed, 187. 



Elbe, description of the Baltic boulder forma- 

 tion on the right bank of, below Hamburgh, 

 244. 



— inferences deduced from, 245. 



Elbow Bay, Bermudas, notice of concretions in 

 the sand of, 110. 



Elevation of continents, effects of the same force 

 which causes volcanic outbursts, 606. 



Elevation of land, South America, 1751, 602. 



1835, 607. 



does not al- 

 ways accompany earthquakes, 618. 



island of Lemus, Nov. 1837, 



005. 



Elevation of mountain-chains, effected slowly, 

 625. 



proofs deduced from the 



structure of the Cordillera, 625. 



Elevations, indications of increased intensity of 

 action, in proceeding from Cornwall north- 

 wards, 285. 



Elmsett, section at, 380. 



Elmswell, sections of wells at, 376. 



Encroachment of sea on land, in the Bermudas, 

 notices of, 109. 



land on sea, 109. 



sand, 109. 



Enys, Mr., notice of his observations on joints in 



the granite of Cornwall, 685. 

 Erme Mouth, notice of beds near, 658. 

 Erratic blocks, notice of, in Suffolk, 366. 

 Erris, county of Mayo, notices respecting the 



structure of, 151, 158, 160. 

 — of parallel trap 



dykes in, 163 et seq. 



2 



