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From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
17–18 [June 1856]
Source of text:
DAR 114: 170
Summary:

Comments on Huxley–Falconer dispute [see "On the method of palaeontology", Ann. & Mag. Nat. Hist. 18 (1856): 43–54].

Wollaston’s On the variation of species [1856].

Has exploded to Lyell against the extension of continents.

Plants common to Europe and NW. America as result of temperate climate.

Contributor:
Darwin Correspondence Project
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From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
17 June 1856
Source of text:
DAR 146: 475
Summary:

CD forgets an author [CD himself in Coral reefs] "who, by means of atolls, contrived to submerge archipelagoes (or continents?), the mountains of which must originally have differed from each other in height 8,000 (or 10,000?) feet".

CL begins to think that all continents and oceans are chiefly post-Eocene, but he admits that it is questionable how far one is at liberty to call up continents "to convey a Helix from the United States to Europe in Miocene or Pliocene periods".

Will CD explain why the land and marine shells of Porto Santo and Madeira differ while the plants so nearly agree?

Contributor:
Darwin Correspondence Project