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Herschel2809

From:
Edward Sabine
To:
Sir John Herschel
Date:
[1 May 1840]
Source of text:
RS:HS 15.89
Summary:

R.S.L. Council approved publication of ES's paper on magnetic observation at sea. Discussions for North American magnetic observatories continue.

Contributor:
John Herschel Project

Herschel8828

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[3 May 1840]
Source of text:
Science Museum Talbt 1/25
Summary:

Thanks for excellent pictures WT sent. JH wishes JH had time for further experiments, especially on the 'thermic spectrum.' Praises [Robert] Hunt's results. Recommends experiment to WT.

Contributor:
John Herschel Project

DCP-LETT-565G

From:
Charles Robert Darwin
To:
Thomas Walker
Date:
5 May [1840]
Source of text:
Jim Somerville (private collection)
Summary:

Acknowledges TW’s letter supplying him with William Kemp’s address.

Contributor:
Darwin Correspondence Project

DCP-LETT-565H

From:
William C. Redfield
To:
Charles Robert Darwin
Date:
6 May 1840
Source of text:
Yale University: Beinecke Rare Book and Manuscript Library (William C. Redfield’s outbound letter book 1835–41 (z117 00151 2), pp. 179–80)
Summary:

Thanks CD for information about Captain Tillard’s account of the volcanic eruption in the Azores in 1811.

Contributor:
Darwin Correspondence Project

Herschel6057

From:
Sir John Herschel
To:
Francis Baily
Date:
[6 May 1840]
Source of text:
RS:HS 3.182 (C: RS:HS 25.8.27)
Summary:

Would FB deputize for him at the council meeting on Friday as he is unable to attend. Letter from F. W. Bessel regarding 61 Cygni. Has written to G. B. Airy regarding Thomas Maclear's paper.

Contributor:
John Herschel Project

Herschel10732

From:
Robert Hunt
To:
Sir John Herschel
Date:
[9 May 1840]
Source of text:
RS:HS 10.85
Summary:

Sends his paper for communication to the R.S.L. Will send some more examples later as his camera has developed a defect.

Contributor:
John Herschel Project

Herschel2454

From:
Edward Sabine
To:
Sir John Herschel
Date:
10 May [1840]
Source of text:
RS:HS 15.308
Summary:

[John] Lefroy should replace [Charles] Riddell in Canada. Discusses proposed Norwegian observatory and proposals for various instruments. Navy officers may be helpful observers in colonies.

Contributor:
John Herschel Project

DCP-LETT-565F

From:
Charles Robert Darwin
To:
William Kemp
Date:
1[1] May [1840]
Source of text:
Cambridge University Library (MS Add. 10252/2) (gift of Ruth Cramond and David Cramond)
Summary:

CD has read WK’s abstract in the Scotsman, 15 February 1840, p. 3, and asks for further details.

Contributor:
Darwin Correspondence Project

Herschel8272

From:
Sir John Herschel
To:
Elizabeth Drummond [Sr.]
Date:
[12 May 1840]
Source of text:
RS:HS 19.78
Summary:

Just moved [to Collingwood]. Will send information about ED's late son, Thomas Drummond. Recalls Drummond's fame and triangulation work on Irish Survey. Describes invention and first demonstration of Drummond Light.

Contributor:
John Herschel Project

Herschel3946

From:
Sir John Herschel
To:
Robert Hunt
Date:
[12 May 1840]
Source of text:
George Eastman House, 3.17 (C: RS:HS 22.15)
Summary:

Will forward RH's paper to the R.S.L.; intrigued by RH's results using mercury vapor to produce the image on exposed paper.

Contributor:
John Herschel Project

DCP-LETT-566

From:
Bartholomew James Sulivan
To:
Charles Robert Darwin
Date:
12 May 1840
Source of text:
DAR 177: 274
Summary:

Gives CD the results of some calculations for "dip" over different distances, as requested.

Contributor:
Darwin Correspondence Project

DCP-LETT-567

From:
Charles Robert Darwin
To:
Royal Society of Arts
Date:
13 May [1840-2]
Source of text:
Royal Society of Arts (RSA/PR/MC/104/10/28)
Summary:

Informs correspondent that he wrote to William Walton all that he knew about the guanaco.

Present state of his health prevents his acceptance of invitation to attend the meeting of the Society.

Contributor:
Darwin Correspondence Project

Herschel13512

From:
Sir John Herschel
To:
[John Ellor Taylor]
Date:
[1840 or later]-5-13
Source of text:
TxU:H/L-0748.2; Reel 1089
Summary:

Thanks for series of portraits of members of Ipswich Museum.

Contributor:
John Herschel Project

RS-MM-001607

From:
Augustus Volney Waller
To:
Thomas Bell
Date:
14 May 1840
Source of text:
MM/21/47, Royal Society
Summary:

No summary available.

Contributor:
Royal Society

Herschel10733

From:
Robert Hunt
To:
Sir John Herschel
Date:
[16 May 1840]
Source of text:
RS:HS 10.86
Summary:

Returns the photographic drawings of W. H. Fox Talbot with many thanks. Fears for their permanence. Has produced similar pictures himself acting on bromide of silver with hydrocholoric acid. Has had trouble with his periscope lens.

Contributor:
John Herschel Project

Herschel378

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[16 May 1840]
Source of text:
RGO 6.463.70
Summary:

Has a problem with the explanation of interference bands produced by mica being placed between the eye and prism-produced dispersion; the explanation is Baden Powell's.

Contributor:
John Herschel Project

Herschel379

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1840-5-16 or later]
Source of text:
RGO 6.463.76
Summary:

Writes to supply GA with an address for a reply to JH's 1840-5-16.

Contributor:
John Herschel Project

DCP-LETT-568

From:
Charles Robert Darwin
To:
John Washington; Royal Geographical Society
Date:
16 May 1840
Source of text:
Royal Geographical Society
Summary:

Has much pleasure "in accepting the honour of being proposed as a member of the Council of the Geographical Society".

Contributor:
Darwin Correspondence Project

Herschel4697

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[17 May 1840]
Source of text:
RS:HS 1.86 (C: RGO 6.463.72)
Summary:

Regarding Prof. Baden Powell's paper on dark bands. Is making catalogues of the moveables of the observatory.

Contributor:
John Herschel Project

Herschel13530

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[18 May 1840]
Source of text:
TxU:H/L-0760.2; Reel 1089
Summary:

Considers paper by [Baden] Powell to be worthless. Sent it to JH today care of Mrs. Stewart.

Contributor:
John Herschel Project
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