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From Joseph Beete Jukes   27 February 1860

Summary

Believes in the "perfect indefiniteness & frequently the vast length of the interval" between consecutive geological formations. Thus has little respect for arguments against CD based on the absence of transitional forms in the geological record. States that species found through series of beds do vary: some Silurian species have many synonyms which are really varieties of greatly differing ages. CD’s theory accounts for the progressive inprovement, multiplication and increase in complexity that can be seen, but which may often be only relative.

Author:  Joseph Beete Jukes
Addressee:  Charles Robert Darwin
Date:  27 Feb 1860
Classmark:  The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/A3/5: 125–7)
Letter no:  DCP-LETT-2716A

From Joseph Beete Jukes   25 May 1862

Summary

JBJ explains his theory of atmospheric denudation of Irish river valleys, to be published [as "On the river valleys in the south of Ireland", Q. J. Geol. Soc. Lond. 18 (1862): 378–403], and suggests its application to the Weald. This slow process would make the Weald far older than CD’s 300 million years.

Thanks for Orchids.

Author:  Joseph Beete Jukes
Addressee:  Charles Robert Darwin
Date:  25 May 1862
Classmark:  DAR 168: 90
Letter no:  DCP-LETT-3571

From J. B. Jukes   30 May 1862

Summary

Elaborates his denudation theory: marine denudation works horizontally, atmospheric works vertically.

Answers point in CD’s letter on Sydney Harbour, N. S. W.

Who is the "goose" who reviews CD’s books in the Athenæum [review of Orchids, 24 May 1862]?

Author:  Joseph Beete Jukes
Addressee:  Charles Robert Darwin
Date:  30 May 1862
Classmark:  DAR 168: 91
Letter no:  DCP-LETT-3579

From J. B. Jukes   3 November 1862

Summary

The statement on p. 87 of Origin that birds break the eggs with their own beaks should be revised.

Author:  Joseph Beete Jukes
Addressee:  Charles Robert Darwin
Date:  3 Nov 1862
Classmark:  DAR 168: 92
Letter no:  DCP-LETT-3794

From Joseph Beete Jukes   10 August 1864

Summary

CD’s support in JBJ’s controversy with Hugh Falconer is welcome. R. I. Murchison supports Falconer, and Lyell does not support their side strongly enough. Falconer and Jukes remain friends in private.

Author:  Joseph Beete Jukes
Addressee:  Charles Robert Darwin
Date:  10 Aug 1864
Classmark:  DAR 168: 93
Letter no:  DCP-LETT-4587
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1860 (1)
1862 (3)
1864 (1)