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DCP-LETT-3252

From:
Charles Robert Darwin
To:
Gardeners’ Chronicle
Date:
[before 14 Sept 1861]
Source of text:
Gardeners’ Chronicle and Agricultural Gazette , 14 September 1861, p. 831
Summary:

Requests orchid specimens from Arethuseae division for his investigation of the many contrivances by which orchids are fertilised by insect agency.

Asks whether Charles Morren has published on the fertilisation of orchids by insect agency.

Contributor:
Darwin Correspondence Project

DCP-LETT-3253

From:
Charles Robert Darwin
To:
Gardeners’ Chronicle
Date:
[before 14 Sept 1861]
Source of text:
Gardeners’ Chronicle and Agricultural Gazette , 14 September 1861, pp. 831–2
Summary:

Two correspondents report fertilising Vinca rosea by imitating the action of an insect inserting its proboscis. Another says his Vinca rosea seed profusely without artificial fertilisation. CD asks what might explain the difference in results. In the latter instance, are the plants kept in a greenhouse with windows left open, so that moths could get access at night?

Contributor:
Darwin Correspondence Project

Herschel11486

From:
Sir John Herschel
To:
John William Lubbock
Date:
[14 September 1861]
Source of text:
RS:HS 11.399-400 & 23.339
Summary:

Does not possess the Transactions of the Astronomical Society, which contains JL's paper. Had to limit the scope of his article so could not deal with the point mentioned in JL's letter. Comments on P. S. Laplace's formula.

Contributor:
John Herschel Project

Herschel11487

From:
Sir John Herschel
To:
John William Lubbock
Date:
[14 September 1861]
Source of text:
RS:HS 11.400 (C: RS:HS 23.339)
Summary:

About the barometric formula for the measurement of heights.

Contributor:
John Herschel Project
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