Search: Herschel, John in correspondent 
1820-1829::1825::03 in date 
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Showing 1–13 of 13 items

Herschel11194

From:
Joshua King
To:
Sir John Herschel
Date:
[2 March 1825]
Source of text:
RS:HS 11.84
Summary:

Forwards a specimen of his cobalt. Gives price and the various methods of use and refining. Thinks the analysis did not show its true qualities. Would like to hear the results of JH's experiments.

Contributor:
John Herschel Project

Herschel2101

From:
William Ritchie
To:
Sir John Herschel
Date:
[3 March 1825]
Source of text:
RS:HS 14.349
Summary:

Pleased JH liked his paper on differential photometer. Discusses apparatus for experiments on light. Describes some papers he has written and some he is writing.

Contributor:
John Herschel Project

Herschel5694

From:
[Charles] R[igobert Marie] Bonne
To:
Sir John Herschel
Date:
[6 March 1825]
Source of text:
RS:HS 4.183
Summary:

Edward Sabine's and JH's memoir on the differences of the meridian between Greenwich and Paris. Hopes to print a notice of the same operation with similar results. Operations last year between Paris and Brest were not a success so hopes to repeat them this year.

Contributor:
John Herschel Project

Herschel3953

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[7 March 1825]
Source of text:
unknown
Summary:

Wishes JH a happy birthday. Finished the catalogue of 2500 nebulae.

Contributor:
John Herschel Project

Herschel6371

From:
Niccolo Cacciatore
To:
Sir John Herschel
Date:
[10 March 1825]
Source of text:
RS:HS 5.136
Summary:

Thanks for information on the R.S.L. barometers. Would he purchase various instruments for the new observatory. Notes on star readings.

Contributor:
John Herschel Project

Herschel8453

From:
Sir John Herschel
To:
James South
Date:
[10 March 1825]
Source of text:
RS:HS 16.434 (C: 20.201)
Summary:

Making, reducing, and publishing double star work is very difficult and, because of Wilhelm Struve's recent endeavors, less pressing than it had been. Mentions various doubles. Expresses interest in JS's plan to purchase a very large refractor.

Contributor:
John Herschel Project

Herschel2442

From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 March 1825]
Source of text:
RS:HS 15.1 & 20.202
Summary:

Comments on ES's measurement [in his Account of Experiments to Determine the Figure of the Earth] indicating 'the increase of the fraction expressing the earth's compression.' Predicts that ES's result will cause a 'sensation,' but does not commit himself to it.

Contributor:
John Herschel Project

Herschel7818

From:
Sir John Herschel
To:
William Wallace
Date:
23] March [1825
Source of text:
RS:HS 20.203
Summary:

Let Josef Fraunhofer make WW's whole transit instrument, and mural circle as well. Attests to Fraunhofer's artistry. Germans will soon leave no stars to discover. Wishes someone would import G. F. Reichenbach's meridian circle and use it on F. W. Bessel's plan. Suggests WW order clocks from [Robert] Molyneux or [William] Hardy.

Contributor:
John Herschel Project

Herschel12544

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[24 March 1825]
Source of text:
RS:HS 13.414
Summary:

Is helping another scientist bring to publication a work on triangulation in the Alps. Comments on JH's idea of suspending an extremely long plumb bob at a particular precipice in the Alps [Foucault pendulum?]. GP does not believe the results would warrant the expense. Comments on the floating collimator [see JH's 1825-1-14], noting that he does not find it very helpful.

Contributor:
John Herschel Project

Herschel3816

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[27 March 1825]
Source of text:
unknown
Summary:

Explains the layout of her recently completed catalogue of 2500 nebulae.

Contributor:
John Herschel Project

Herschel5935

From:
Francis Baily
To:
Sir John Herschel
Date:
[28 March 1825]
Source of text:
RS:HS 3.58
Summary:

Is sending a copy of Wilhelm Struve's paper on Josef Fraunhofer's telescope. Regarding F. W. Bessel's formula on longitude. Has copies of J. J. Littrow's paper for him.

Contributor:
John Herschel Project

Herschel6370

From:
Niccolo Cacciatore
To:
Sir John Herschel
Date:
[29 March 1825]
Source of text:
RS:HS 5.135
Summary:

Is grateful for being elected an Associate of the Astronomical Society. Compares barometers. Grateful for comments on his pamphlet. News of expedition up Mont Cuccio. Local disputes regarding the results.

Contributor:
John Herschel Project

Herschel8011

From:
William Hyde Wollaston
To:
Sir John Herschel
Date:
[31 March 1825]
Source of text:
RS:HS 18.279
Summary:

Invites JH to dinner Saturday to meet J. G. S. Van Breda.

Contributor:
John Herschel Project
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