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DCP-LETT-1912B

Summary

Cancelled: appears in 1917.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  5 July [1856]
Classmark:  Charles Lyell’s notebook 213: 101–2?
Letter no:  DCP-LETT-1912B

From Charles Lyell   [1 July 1856]

Summary

To cast doubt on CD’s view that volcanic action is associated with elevation of land, CL suggests that local oscillations in strata underlying volcanoes could also explain how active volcanoes have uplifted fossil deposits of marine shells. Overall he is more inclined to believe that recent volcanoes belong to areas of subsidence rather than of elevation.

Author:  Charles Lyell, 1st baronet
Addressee:  Charles Robert Darwin
Date:  [1 July 1856]
Classmark:  The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/A3/2: 132–6)
Letter no:  DCP-LETT-1915A

To Charles Lyell   5 July [1856]

Summary

Discusses theory of submerged continental extensions. Objects that if it is applied to one island, it must be applied to all. Admits that some volcanoes may have been associated with subsidence, in contrast to his former view. Cites evidence from S. American Cordillera. Doubts that elevation associated with volcanoes is merely local, and that great ocean areas are necessarily sinking.

Says he will make his essay [on species] as complete as possible and will discuss CL’s Principles.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  5 July [1856]
Classmark:  American Philosophical Society (Mss.B.D25.133)
Letter no:  DCP-LETT-1917

DCP-LETT-1919A

Summary

Cancelled: appears in 1920.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  8 July [1856]
Classmark:  Charles Lyell’s notebook II: 95–8?
Letter no:  DCP-LETT-1919A

To Charles Lyell   8 July [1856]

Summary

Thanks CL for loan of [Matthew Fontaine?] Maury’s map.

Discusses possibility of submerged continental extension including Madeira, Canaries, and Azores.

Mentions icebergs as carriers of European plants.

Hooker’s work on Antarctic flora.

Comments on coolness of tropics in glacial period and consequent migrations. Hooker’s views on this.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  8 July [1856]
Classmark:  American Philosophical Society (Mss.B.D25.134)
Letter no:  DCP-LETT-1920
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letter (5)
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