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DCP-LETT-6757

From:
Charles Robert Darwin
To:
John Dean Caton
Date:
24 May 1869
Source of text:
DAR 143: 255
Summary:

Discusses secondary hoofs in antelope and deer.

Mentions tuft of hair on turkey hen.

Contributor:
Darwin Correspondence Project

DCP-LETT-6758

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
26 May 1869
Source of text:
DAR 86: A52a-c, DAR 84.1: 143
Summary:

Migratory male nightingales and blackcaps arrive before females [see Descent 1: 259].

Discusses chaffinch "Peggers".

Disagrees with CD’s opinion that canary mules are fertile.

Display of colour of greenfinches in courtship.

Contributor:
Darwin Correspondence Project

DCP-LETT-6759

From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
27 May [1869]
Source of text:
DAR 148: 323
Summary:

Thanks for information about bird migration.

Comments on canary hybridisation.

Contributor:
Darwin Correspondence Project

DCP-LETT-6759F

From:
Charles Robert Darwin
To:
John Higgins
Date:
27 May 1869
Source of text:
Dominic Winter Auctioneers (dealers) (10 April 2019, lot 138)
Summary:

Acknowledges receipt of £263 13s. 8d.

Contributor:
Darwin Correspondence Project

DCP-LETT-6761

From:
Adolf Reuter
To:
Charles Robert Darwin
Date:
30 May 1869
Source of text:
DAR 176: 124
Summary:

AR, gardener to the King of Prussia, has read Variation and wishes to send CD observations.

Contributor:
Darwin Correspondence Project

RS-MM-000974

From:
Charles Piazzi Smyth
To:
WR Birt
Date:
3 May 1869
Source of text:
MM/15/63, Royal Society
Summary:

No summary available.

Contributor:
Royal Society

Herschel10237

From:
W. R. Greenhill
To:
Sir John Herschel
Date:
[19 May 1869]
Source of text:
RS:HS 9.124
Summary:

Is grateful for the testimonial and for the favorable way in which he is regarded.

Contributor:
John Herschel Project

Herschel10685

From:
Sir John Herschel
To:
Sir William Huggins
Date:
[28 May 1869]
Source of text:
RS:HS 24.262
Summary:

About an increase in sun spot activity.

Contributor:
John Herschel Project

Herschel10686

From:
Sir William Huggins
To:
Sir John Herschel
Date:
[31 May 1869]
Source of text:
RS:HS 10.50
Summary:

Has written to Lieut. John Herschel suggesting points on which solar observations might be valuable. Is pleased he has seen the bright lines. Saw some bright lines in the middle of the sun's disk.

Contributor:
John Herschel Project

Herschel13361

From:
Sir John Herschel
To:
William James Herschel
Date:
[6 May 1869]
Source of text:
TxU:H/L-0564; Reel 1053
Summary:

Glad that Emma's jaundice is over. Criticises metric system of measure. Encloses JH's response to Mr. Yates's letter in the Times on Geometrical British System. Upset by present resistance to anything English. This is what 'lost us...Neptune.' Would like to see Arabic translation of Outlines Astr. Relieved that 'shabby' French translation by [L. M. J.] Chevigné was stopped. Failure of gold standard in India. French and English coins. Suggestions on WJH's effort to introduce oaths into Indian justice system. Popularity of velocipedes [bicycles]. Family news.

Contributor:
John Herschel Project

Herschel159

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[8 May 1869]
Source of text:
RGO 6.695.494 (drafts RS:HS 1.314 & 24.256)
Summary:

Has read the syllabus of GA's lectures on magnetism; it reminds JH of his attempt to solve the problem of 'Mahomet's coffin', which JH still believes would work.

Contributor:
John Herschel Project

Herschel166

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[30 May 1869]
Source of text:
RGO 6.257.356
Summary:

Is considering a new edition of Outlines Astr.[?] and wants to provide the latest determinations of the periods of rotation of the planets.

Contributor:
John Herschel Project

Herschel1934

From:
Sir John Herschel
To:
[John Tyndall]
Date:
[29 May 1869]
Source of text:
DMC 695A.885.11 (C: RS:HS 24.263 & RI 561)
Summary:

'Great Comet of 1843' presents difficulties for JT's explanation of comets' tails [continuation of JH's 1869-5-28].

Contributor:
John Herschel Project

Herschel2182

From:
Sir John Herschel
To:
Henry Enfield Roscoe
Date:
[28 May 1869]
Source of text:
RS:HS 24.261
Summary:

Thanks HR for sending HR's book on spectrum analysis [Spectrum Analysis, 1869]. Praises that publication.

Contributor:
John Herschel Project

Herschel3347

From:
John Tyndall
To:
Sir John Herschel
Date:
[29 May 1869]
Source of text:
RS:HS 17.406b (C: RI 562)
Summary:

Thanks for JH's suggestions on JT's outline of comet speculations. [G. B.] Airy, too, has replied. Includes more speculations on 'envelopes' and nucleus of comet.

Contributor:
John Herschel Project

Herschel3441

From:
Sir John Herschel
To:
John Tyndall
Date:
[30 May 1869]
Source of text:
RS:HS 17.407a (C: 24.264; C: RI 563-4)
Summary:

Suggests experiments with regard to polarization and vaporization, and comets' tails.

Contributor:
John Herschel Project

Herschel3538

From:
Sir John Herschel
To:
John Tyndall
Date:
[28 May 1869]
Source of text:
RS:HS 17.406a (C: RI 559-60 & RS:HS 24:260)
Summary:

Thanks for paper on comets. Offers questions, problems to be resolved, particularly on termination of comet.

Contributor:
John Herschel Project

Herschel4926

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[6 May 1869]
Source of text:
RS:HS 1.313
Summary:

Is sending his lectures on magnetism he gave at Cambridge.

Contributor:
John Herschel Project

Herschel4927

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[18 May 1869]
Source of text:
RS:HS 1.315 (C: RGO 6.695.495)
Summary:

Concerning JH's Mahomet's coffin theory.

Contributor:
John Herschel Project

Herschel4928

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[31 May 1869]
Source of text:
RS:HS 1.316 (ACCS: RGO 6.257.359)
Summary:

Gives information on the rotational periods of Mars, Jupiter, and Saturn [see JH's 1869-5-30].

Contributor:
John Herschel Project
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