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To George Charles Wallich   12 December [1860]

Summary

Discusses GCW’s Notes on the presence of animal life at vast depths [1860]. Asks for information on the decay of exuviae of organisms at bottom of sea. Has GCW reason to believe extensive areas of sea-bottom are bare? Is he sure rounded pebbles were not dropped by icebergs? Curious that water at such depths retains oxygen.

Author:  Charles Robert Darwin
Addressee:  George Charles Wallich
Date:  12 Dec 1860
Classmark:  Karpeles Manuscript Library Museums (subsequently on sale at Nate D. Sanders (dealer) 25 February 2016)
Letter no:  DCP-LETT-3020

From G. C. Wallich   14 December [1860]

Summary

Response to [3020]. CD has been misled by errors made in the Times notice [5 Dec 1860, p. 5]. GCW does not doubt that Foraminiferous matter as well as other deep sea deposits vary greatly in thickness, but positive results are difficult to establish. Some areas of the sea bed are bare but their extent has not been established. He now thinks that he was too hasty in the conclusion that deep currents produce abrasion and rounding of gravel.

Author:  George Charles Wallich
Addressee:  Charles Robert Darwin
Date:  14 Dec [1860]
Classmark:  DAR Pamphlet collection (bound in Wallich 1860)
Letter no:  DCP-LETT-3023A
Document type
letter (2)
Addressee
Correspondent
Darwin, C. R.[X]
Wallich, G. C.[X]
Date
1860
12
12 (1)
14 (1)
letter