PREFACE TO THE TENTH EDITION. 



v 





V 



>k7 



0f t ; 



■ 



to 



I 



a in- 

 ion* in 



* obli. 



* 



■ ssion 

 K)ehs i 



rol and 



r Job 



o^er of 



glacial 



uiad 



Ninth 

 Edition. 



Page 



Tenth 

 Edition. 



291 



Page 



306 



495 



514 



323 



539 



334 



340 



563 



568 



616 



625 

 633 



Additions and Corrections. 



orioin of 



C 7 



' the swatch ' and the mode of formation of the 



elevated banks of rivers. # 



Various causes of currents treated of more fully than in the 



former edition. 



Waste of the coast of Norfolk illustrated by the rums of 

 Eccles Church as they appeared in 1839 and in 1862. A 

 drawing by the Kev. S. W. King of the church in 1862. 



St. Michael's Mount, Cornwall — Three views of the Mount 

 showing its identity with the Ictis of Diodorus— Drawing 

 of a block of tin dredged up in Falmouth Harbour. 



Temperature of different divisions or basins of the Mediter- 

 ranean compared to that of the Atlantic — Saltness of the 

 Mediterranean, and a diagram illustrating the result of 

 Captain Spratt's survey. 



Shoals and valleys in the German Ocean— The Silver Pits 

 and Dogger Bank — Comparison of the recent deposits of 

 these shoals and the crag of Norfolk and Suffolk. 



Internal talus of Monte Nuovo, containing fragments of 

 marine shells and pottery, with a section of the mountain. 



Ropy lava and origin of this structure. 



Hypothesis of elevation craters not applicable to Somma or 

 Vesuvius— Ravines on the north side of Somma, and the 

 light which they throw on its structure, from observa- 

 tions made by the author in 1857 and 1858— Presence of 

 land-plants and absence of contemporaneous marine shells 

 in the ancient tuffs of Monte Somma. 



iradav 



e,'d( 



ark 

 lained. 



waters 



of the 



• 



Sir 



ir X 



rf the 

 -trated 



Mis'" 



, ,v Or- 

 , of * 



laci« r 



t 



to 



x¥ 



The reader may also be interested in knowing the dates of 

 the successive editions of this treatise, as well as of two other 



geological works, which are intimately connected 



oi my 

 with it. 



>/ 



yf publication of 



Principles, vol. i. in 8vo., published in 



v 



» 



n. 



V 



i. 2d edition in 8vo. 



ii. 2d edition 



„ ... *~™ „ 



iii. 1st edition 



?? 



)9 



• New edition (called the 3d) of the whole work in 



4 vols. 12mo. 

 - 4th edition, 4 vols. 12mo. 



-5th 



Elements, 1st edition in 1 vol. 

 Principles, 6th „ 3 vols. 12mo. 



Elements, 2d edition in 2 vols. 12mo. 



of Man.' 



. Jan. 1830. 



. Jan. 1832. 



1832. 



. Jan. 1833. 

 . May 1833. 





May 1834. 

 June 1835. 



Mar. 1837. 

 July 1838. 

 June 1840. 

 July 1841. 



