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Darwin, G. H. in author 
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
10 Oct 1878
Source of text:
DAR 210.2: 70
Summary:

Recounts the experiments on Fechner’s law he has found in Helmholz; they are on the smallest perceptible differences of illumination. Describes how to test whether plants’ responses to lights are in accordance with it.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
7 Nov 1878
Source of text:
DAR 210.2: 71, The Royal Society (RR/8/91)
Summary:

Encloses William Thomson’s report on GHD’s paper. Some of it was written in Rayleigh’s hand.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
14 Dec 1878
Source of text:
DAR 210.2: 72
Summary:

Asks CD if he would screw himself up to inviting A. Newton to Down.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
3 Mar 1879
Source of text:
DAR 210.2: 73
Summary:

Thanks CD [for his increased allowance?].

Writes of his tour [in Algeria].

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Emma Wedgwood; Emma Darwin
Date:
[30 Apr 1879]
Source of text:
DAR 210.2: 78
Summary:

Sends some papers on Erasmus Darwin for CD.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
[before 3 May 1879]
Source of text:
DAR 210.2: 74
Summary:

Encloses some references [missing] to information on Dr Erasmus Darwin.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
5 May 1879
Source of text:
DAR 210.2: 75
Summary:

Sends CD an article on Dr Erasmus Darwin [from Monthly Magazine, see 12028].

Tells of a "discovery" he has made about taking observations of the sun. Does not know yet whether it is new.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
10 May 1879
Source of text:
DAR 210.2: 76
Summary:

Sends abstracts of more articles [on Dr Erasmus Darwin] from Monthly Magazine.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
24 June 1879
Source of text:
DAR 210.2: 77
Summary:

Sends results of his researches on the Darwin family at the Record Office.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
10 July 1879
Source of text:
DAR 210.2: 79
Summary:

Has written to Col. J. L. Chester [genealogist] to ask whether he would like to see the deeds [for Darwin genealogy, see Emma Darwin 2: 237].

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
13 July 1879
Source of text:
DAR 210.2: 80
Summary:

Sorry to hear Henrietta’s opinion of the [Erasmus Darwin] proofs. GHD did not think it dull. He makes some suggestions.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
[30 Nov 1879]
Source of text:
DAR 210.2: 81
Summary:

Erasmus thinks CD should give a copy of Erasmus Darwin to Henry Parker.

Contributor:
Darwin Correspondence Project
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From:
Elizabeth (Bessy, Lizzy) Darwin; Francis Darwin; George Howard Darwin; Horace Darwin; Leonard Darwin; William Erasmus Darwin; Sara Sedgwick; Sara Darwin; Henrietta Emma Darwin; Henrietta Emma Litchfield
To:
Charles Robert Darwin
Date:
17 Jan 1880
Source of text:
DAR 99: 208
Summary:

Send CD a present of a fur coat.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
4 Mar 1880
Source of text:
DAR 210.2: 82
Summary:

Writes on family matters and researches.

Mentions construction of a pendulum

and completion of a paper he will send to the Royal Society.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
6 Mar 1880
Source of text:
DAR 210.2: 83
Summary:

Has sent off paper to the Royal Society

and begun work on a new problem which he feels contains the meaning of Bode’s Law, concerning the mean distances of the planets from the sun. There are mathematical difficulties, however, which he may be unable to surmount.

Will get to work on the pendulum next week.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
28 May 1880
Source of text:
DAR 210.2: 84
Summary:

Writes of a Mrs Noel, who is annoyed with CD’s neglect of Erasmus Darwin’s brother, W[illiam] A[lvey] D[arwin I], [in Erasmus Darwin].

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
27 July 1880
Source of text:
DAR 64.2: 94; DAR 210.2: 85
Summary:

Asks CD’s advice on how to answer a letter requesting his endorsement of Wrigley, his former teacher at Clapham School.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
9 Oct 1880
Source of text:
DAR 210.2: 86
Summary:

Is having a trough made to try experiments [on ripple-marks].

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
19 Nov 1880
Source of text:
DAR 210.2: 87
Summary:

Comments on CD’s book [Movement in plants].

Continues with his experiments with ripple-marks.

Is in despair about his astronomy.

Contributor:
Darwin Correspondence Project
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From:
George Howard Darwin
To:
Charles Robert Darwin
Date:
[9 June 1881]
Source of text:
DAR 210.2: 88
Summary:

Has nearly finished his mathematical paper.

Is not sure when he will go to Patterdale.

Contributor:
Darwin Correspondence Project
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