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Herschel9350

From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[28 April 1870]
Source of text:
RS:HS 7.104
Summary:

Sends two of his publications, one on terrestrial magnetism at Berlin. Comments on the results, and wonders if JH would enlist the help of the B.A.A.S. to finance further studies by H. J. R. Petersen.

Contributor:
John Herschel Project

Herschel1607

From:
Sir John Herschel
To:
Edward Sabine
Date:
[28 April 1870]
Source of text:
Cambridge University Library 7656/H727 (C: RS:HS 24.307)
Summary:

Comments on the effect of great temperature variations on the speculum of a telescope.

Contributor:
John Herschel Project

Herschel3448

From:
Sir John Herschel
To:
Edward Sabine
Date:
[28 April 1870]
Source of text:
RS MC.9.63 (C: RS:HS 24.308)
Summary:

ES has been forwarded letter explaining why 'great telescope' at Melbourne will not work and suggesting construction corrections, on which JH, who believes such 'a priori condemnation' unjustified, comments herein.

Contributor:
John Herschel Project

DCP-LETT-7177

From:
George Cupples
To:
Charles Robert Darwin
Date:
29 Apr 1870
Source of text:
DAR 161: 292
Summary:

Will send deerhound puppy.

Is critical of Herbert Spencer.

Contributor:
Darwin Correspondence Project
Text Online

FVM-70-04-30

From:
Ferdinand von Mueller
To:
Julius Haast
Date:
30 April 1870
Source of text:
MS papers 37, folder 208, no. 578, Haast family papers, Alexander Turnbull Library, Wellington
Summary:

No summary available.

Contributor:
Correspondence of Ferdinand von Mueller Project
Text Online

WCP2244

From:
Joseph Dalton Hooker
To:
Alfred Russel Wallace
Date:
30 April 1870
Source of text:
British Library, The: BL Add. 46435 f. 167
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project

Herschel8730

From:
Richard Anthony Proctor
To:
Sir John Herschel
Date:
[30 April 1870]
Source of text:
RS:HS 14.122
Summary:

Sends map from his new atlas. Reports finding a region rich in bright stars in the northern hemisphere but distinct from the Milky Way. States that in a Royal Institution lecture, he will claim that telescopes cannot reach the limits of the sidereal system and that it is far more complex than traditionally assumed.

Contributor:
John Herschel Project

Herschel2621

From:
Sir John Herschel
To:
William Selwyn
Date:
[30 April 1870]
Source of text:
RS:HS 24.309
Summary:

Is returning March heliographs. Discusses the appearance of the spots. Has not received the April heliographs.

Contributor:
John Herschel Project

Herschel6864

From:
Warren de La Rue
To:
Sir John Herschel
Date:
[30 April 1870]
Source of text:
RS:HS 6.171
Summary:

Has just learnt that some negatives were sent to his former place of residence. Will forward them when he goes to the City. A vote has been made from the Donation Fund of the R.S.L. for six copies of the Kew Solar negatives.

Contributor:
John Herschel Project
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