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DCP-LETT-1496

From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
[Apr 1852]
Source of text:
DAR 107: 66–7
Summary:

Questions on variation in nature: taxa varying in one region but not another. Variation between vs within species. Rarity of variation in important organs within a species. G. R. Waterhouse’s views on variation in highly developed organs, which CD relates to variation in rudimentary organs.

Asks for cases of obligate self-fertilising plants.

[CD annotation proposes using the Steudel Nomenclator botanicus (1821–4) to determine if variable species occur in genera with many species.]

Contributor:
Darwin Correspondence Project

DCP-LETT-1478A

From:
Johannes Japetus Smith (Japetus) Steenstrup
To:
Charles Robert Darwin
Date:
8 Apr 1852
Source of text:
Det Kongelige Bibliotek, Copenhagen
Summary:

His difficulties in answering CD’s letter of 3 Jan [1852] [see 1469]. There is no Lepas mitra in the Lorenz Spengler collection. He undertakes to compare the specimens of Balanus sent by CD with those of Spengler.

He thanks CD for his book [Fossil Cirripedia (1851)].

His work with Professor Forchhammer and Mr Worsaae.

Contributor:
Darwin Correspondence Project

DCP-LETT-1479

From:
Charles Robert Darwin
To:
George Crawford Hyndman
Date:
16 Apr [1852]
Source of text:
American Philosophical Society (Mss.B.D25.101)
Summary:

Thanks GCH for Balanus specimens.

Contributor:
Darwin Correspondence Project
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