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To Charles Lyell   30 July 1837

Summary

Galapagos land birds and reptiles.

No two naturalists agree on any fundamental idea [of species]. "Everything is arbitrary."

Has been with Richard Owen going over the S. American fossils.

Has worked out the non-relation between animals’ bulk and luxuriance of vegetation.

The horse once common on the Pampas. The mystery of the extinction of these animals.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  30 July 1837
Classmark:  The University of Edinburgh Centre for Research Collections (Lyell Collection Coll-203/A1/69: 140–2)
Letter no:  DCP-LETT-367

To Charles Lyell   [19 December 1837]

Summary

Responds to Lyell’s query [missing] about northern and southern limits of coral islands of the Pacific. Warns that coral islands are much more thinly distributed than people realise and cites examples. Comments on views of Matthew Flinders. Reading work of É[lie] de B[eaumont]. Notes difficulty of setting an east-west boundary to coral islands.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [19 Dec 1837]
Classmark:  American Philosophical Society (Mss.B.D25.9)
Letter no:  DCP-LETT-394
Document type
letter (2)
Author
Darwin, C. R.disabled_by_default
Addressee
Lyell, Charlesdisabled_by_default
Correspondent