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Jukes, J. B. in author 
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From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
27 Feb 1860
Source of text:
The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/A3/5: 125–7)
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.

Contributor:
Darwin Correspondence Project
From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
25 May 1862
Source of text:
DAR 168: 90
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.

Contributor:
Darwin Correspondence Project
From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
30 May 1862
Source of text:
DAR 168: 91
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]?

Contributor:
Darwin Correspondence Project
From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
3 Nov 1862
Source of text:
DAR 168: 92
Summary:

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

Contributor:
Darwin Correspondence Project
From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
10 Aug 1864
Source of text:
DAR 168: 93
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.

Contributor:
Darwin Correspondence Project