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are subject to be acled upon by the expansive forces of the 

 mineral regions; that by these forces they have been actually 

 raised up, and are sustained by tliem in their present situation«« 

 (L. c. pag. 336). 



Og Lyell fortæller selv videre om sin stilling til spørsmaalet 

 om landets stigning paa den skandinaviske halvø: »In former 

 editions I expressed many doubts as to the validity of the proofs 

 of a gradual rise of land in Sweden. A detailed statement of 

 the observations which I made in 1834, and which led me to 

 change my opinion, will be found in the Philosophical Trans- 

 actions for 1835, part I« (Lyell: Principles of Geology, 4th 

 edition. Vol. II, 1835, pag. 337). Jeg har allerede ved en tidligere 

 anledning (Norsk geol. tidsskrift, B. II, Nr. 7, pag. 6) gjort op- 

 merksom paa de betydningsfulde iagttagelser, som omtrent paa 

 denne tid blev gjort af James Smith of Jordanhill. Og i sin 

 Address delivered of the Anniversary Meeting of the Geological 

 Society of London 18y37« yttrede Charles Lyell følgende: 

 > Changes in the relative level of land and water, in the estuary 

 of the Clyde, are indicated by facts described in another paper 

 by Mr. Smith of Jordan Hill, near Glasgow. Superficial deposits, 

 in which a great number of marine shells of recent species are 

 imbedded, are found on the banks of the Clyde below Glasgow, 

 at the height of 30 or 40 feet above the sea. I bad myself an 

 opportunity of verifying during the last summer several of these 

 observations of Mr. Smith, and found equally clear proofs that 

 the Island of Arran had participated in the upward movement« 

 ^L. c. pag. 28). 



Dette var saaledes omtrent samtidig med, at Bravais utførte 

 sine merkelige og i lang tid gjemte og glemte iakttagelser og 

 undersøkelser med hensyn til gamle klippe-terrasser i Alten, og 

 naaede frem til sine epokegjørende slutninger med hensyn til 

 strandlinjernes fald. Hvad vi ogsaa i denne forbindelse bør ha 

 opmerksomheten henvendt paa, er, at allerede Bravais iakttok 

 og maalte høiden af tre sæt strandlinjer. Afhandlingen utkom 

 under titel: Bravais: »Sur les lignes dancien niveau de la mer, 

 dans le Finmark* (Comptes Rendus d. Séances d. lAcademie 

 des Sciences, Paris, Tome Dixiéme, 1840, p. 691 — 693). Af denne 

 kan anføres: »L'auteur distingue deux lignes d'ancien niveau 

 bien nettement indiquées. La supérieure a 67,4 m. d'élévation 

 dans la baie de Kaafiord, et son élévation diminue graduellement 

 jusqu'a lembouchure dune riviére nommée Jernelv, ou elle n'a 

 plus que 42,6 m. A partier de ce point, elle s'abaisse d'une 

 maniére beaucoup plus rapide jusqua Stammerfest ou sa hauteur 

 n'est plus que de 28,6 m. La ligne inférieure suit des phases 

 I)areilles; mais son inclinaison est réguliére et denviron 35" de 



