Search: 1870-1879::1873::07 in date 
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From:
John Farr
To:
Charles Robert Darwin
Date:
10 July 1873
Source of text:
DAR 164: 28
Summary:

Thanks for photograph.

Contributor:
Darwin Correspondence Project
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From:
Charles Harrison Blackley
To:
Charles Robert Darwin
Date:
11 July 1873
Source of text:
DAR 160: 193
Summary:

Thanks for suggestion to try effect of dry heat on pollen and for other new information on pollen. Will begin new experiments soon, hoping to cure hay-fever.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Johann Louis Gerard (Gerard) Krefft
Date:
12 July [1873]
Source of text:
Mitchell Library, Sydney (MLMSS 5828)
Summary:

Thanks JLGK for photos of natives of Queensland.

Asks if he can observe whether worms throw up castings in wet weather.

Contributor:
Darwin Correspondence Project
From:
Alfred William Bennett
To:
Charles Robert Darwin
Date:
12 July 1873
Source of text:
DAR 160: 141
Summary:

Believes some flowers fail to produce seed because of the access of too great a quantity of pollen. Asks for CD’s opinion and references.

Contributor:
Darwin Correspondence Project
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From:
John Traherne Moggridge
To:
Charles Robert Darwin
Date:
12 July 1873
Source of text:
DAR 171: 218
Summary:

Sends his paper on Ophrys insectifera, translated into German by H. G. Reichenbach [Abh. Kais. Leopold.-Carol. Dtsch. Akad. Naturforsch. 33 (1870) no. 3], which shows the intermediates between O. aranifera and O. apifera. He has since gathered information on variation in Ophrys.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
12 July 1873
Source of text:
The John Rylands Library, The University of Manchester
Summary:

Seeks the assistance of a professional chemist in securing a qualitative analysis of the fluid secreted by the glands of Drosera which have the power of dissolving animal matter out of the bodies of insects. [See 8979.]

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Henry Edwards
Date:
15 July [1873]
Source of text:
Natural History Museum, Library and Archives (General Special Collections MSS DAR A6)
Summary:

HE’s facts about the Mexican ant [Myrmecocystus mexicanus] are "most wonderful & interesting".

Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
15 July 1873
Source of text:
DAR 164: 206
Summary:

Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
James Dewar; John Gray M‘Kendrick
Date:
15 July 1873
Source of text:
Royal Institution of Great Britain (RI MS DIe/3)
Summary:

Thanks for the three essays: although they are beyond his scope, they seem to him very interesting.

Contributor:
Darwin Correspondence Project
From:
Mary Catherine Sackville-West, countess of Derby; Mary Catherine Gascoyne-Cecil, countess of Derby; Mary Catherine Stanley, countess of Derby
To:
Charles Robert Darwin
Date:
16 July 1873
Source of text:
DAR 162: 166
Summary:

Sends a bottle containing fish which Lord Arthur Russell had promised to send.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
16 July [1873]
Source of text:
The John Rylands Library, The University of Manchester
Summary:

Thanks EF for his offer of assistance. Could the viscid secretions [in glands of Drosera] contain pepsin? Will the sodium carbonate render the testing of organic matter difficult? [See 8979.] Will send the fluid in a fortnight.

Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
17 July 1873
Source of text:
DAR 164: 207
Summary:

Is going to Switzerland, so analysis of Drosera washings will be delayed. Agrees with CD that solvent is probably pepsin.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Unidentified
Date:
18 July [1873?]
Source of text:
American Philosophical Society (Mss.B.D25.430)
Summary:

Comments on ability of recipient to move his scalp.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
18 July [1873]
Source of text:
The John Rylands Library, The University of Manchester
Summary:

Agrees to delay sending the fluid [from the glands of Drosera] until early October. Will try suggestion about pepsin. [See 8981.]

Contributor:
Darwin Correspondence Project
From:
John Chapman
To:
Charles Robert Darwin
Date:
19 July 1873
Source of text:
DAR 161: 132, 132/1
Summary:

Asks CD to meet with Dr Wild to discuss the Westminster Review, which CD has supported.

Quotes from Alexander Kennedy on Maori observations on competition between native New Zealand birds and introduced bees for nectar of tree blossoms.

Contributor:
Darwin Correspondence Project
From:
John Traherne Moggridge
To:
Charles Robert Darwin
Date:
22 July 1873
Source of text:
DAR 171: 219
Summary:

He will repeat the experiments in which CD found that formic acid vapour killed seeds [see 8866]. John Lindley describes effects of other acids on germination.

He has tabulated the large amount of variation in English Ophrys apifera.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Nature
Date:
[before 24 July 1873]
Source of text:
Nature , 24 July 1873, p. 244
Summary:

Sends a letter from J. D. Hague confirming his earlier observation [see 8788] of frightened behaviour of ants when they come upon dead ants. CD had asked for confirmation because J. T. Moggridge had suggested that the ants’ behaviour was alarm at the scent of the observer’s fingers.

Contributor:
Darwin Correspondence Project
From:
John Traherne Moggridge
To:
Charles Robert Darwin
Date:
24 July 1873
Source of text:
DAR 171: 220
Summary:

CD has clarified the way to conduct the formic acid experiment.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Armand Sabatier
Date:
24 July 1873
Source of text:
Colby College Libraries
Summary:

Thanks for Études sur la coeur et la circulation centrale dans la série des vertébrés (Studies on the heart and the central circulation in the vertebrate series; Sabatier 1873).

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
John Scott Burdon Sanderson, 1st baronet
Date:
25 July 1873
Source of text:
University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-11)
Summary:

Describes his recent work on Drosera digestion of organic materials, e.g., albumen and gelatin. Edward Frankland has given CD a rough test for pepsin. Some plant extracts cause as much inflection as meat. Has found some reversible inflection with heat and perhaps some heat rigor. Has measured the extreme sensitivity of Drosera with very dilute solution of ammonium phosphate.

Contributor:
Darwin Correspondence Project