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 |