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Schumacher, Heinrich Christian in correspondent 
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Herschel2886

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[9 July 1835]
Source of text:
RS:HS 15.377
Summary:

Visits F. W. Bessel in Berlin to discuss pendulum experiments. [C. A.] Steinheil invented a photometer to measure relative light of different stars.

Contributor:
John Herschel Project

Herschel2887

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[17 July 1838]
Source of text:
RS:HS 15.378
Summary:

Received JH's note from Belvedere Hotel. Mentions various arrangements regarding JH's European journey, including JH's planned visit to Wilhelm Olbers.

Contributor:
John Herschel Project

Herschel2888

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[19 July 1838]
Source of text:
RS:HS 15.379
Summary:

Unless other responsibilities interfere, HS will meet JH in Bremen.

Contributor:
John Herschel Project

Herschel2889

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[24 July 1838]
Source of text:
RS:HS 15.380
Summary:

In compliance with JH's request, HS did not go to Bremen to meet JH. Hopes JH will visit him in Altona and stay at his house.

Contributor:
John Herschel Project

Herschel2890

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[3 August 1838]
Source of text:
RS:HS 15.381
Summary:

Asks if he can publish the finding that the star in Argo is dimming in Astronomische Nachrichten. Questions whether barometric information should be in feet or yards. Asks JH about a publication that HS and [Alexander von] Humboldt are planning.

Contributor:
John Herschel Project

Herschel2891

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[19 January 1839]
Source of text:
RS:HS 15.382
Summary:

Forwards a request from C. F. Gauss for magnetic observations made in England.

Contributor:
John Herschel Project

Herschel2892

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[12 February 1839]
Source of text:
RS:HS 15.383
Summary:

Asks permission to use information from JH's letter in Astronomische Nachrichten. Believes [Alexander von] Humboldt can explain observational anomalies that JH notes.

Contributor:
John Herschel Project

Herschel2893

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[11 February 1840]
Source of text:
RS:HS 15.384
Summary:

Asks JH to petition King Christian VIII of Denmark to support the Altona observatory.

Contributor:
John Herschel Project

Herschel2894

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[28 February 1840]
Source of text:
RS:HS 15.385
Summary:

Thanks JH for suggesting that the R.A.S. write to King Christian VIII, but requests that JH include his own name and mention Astronomische Nachrichten.

Contributor:
John Herschel Project

Herschel2895

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[10 September 1840]
Source of text:
RS:HS 15.386
Summary:

Has been busy with geodetic work. Pulkowa instruments are excellent. [F. W.] Struve has sent zenith distances of Ursa Majores. [G. von] Reichenbach's death dealt blow to precision of Munich instruments.

Contributor:
John Herschel Project

Herschel2897

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[22 October 1841]
Source of text:
RS:HS 15.388
Summary:

Has not received parcels from Royal Society. Wants JH to send notice of proposal to Astronomische Nachrichten. Remarks on JH's requiem for William Herschel's large telescope. Asks JH to thank King of Denmark directly for the order conferred.

Contributor:
John Herschel Project

Herschel2898

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[24 December 1841]
Source of text:
RS:HS 15.389
Summary:

Asks about the claim that JH professes that the moon affects the atmosphere and about possibly related research. Received paper on constellations for Astronomische Nachrichten.

Contributor:
John Herschel Project

Herschel2900

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[4 January 1842]
Source of text:
RS:HS 15.390
Summary:

JH's return of order offered him was painful. Will report in Astronomische Nachrichten that JH denies meteorological theory attributed to him and that the 'Wiener Wirtschaftskalender für 1840' is based on JH's authority.

Contributor:
John Herschel Project

Herschel2901

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[11 January 1842]
Source of text:
RS:HS 15.391
Summary:

Asks JH to thank King Christian VIII of Denmark for the order, even though JH cannot accept it. Sends a mathematical puzzle.

Contributor:
John Herschel Project

Herschel2902

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[30 October 1843]
Source of text:
RS:HS 15.392
Summary:

Saw article in the [London] Times about Lord Rosse's telescope. Has received a letter from [James] South. Asks for information from JH for private use. [Francesco] del Vico has observed triple stars, but HS thinks the telescope by [R. A.] Cauchoix is flawed.

Contributor:
John Herschel Project

Herschel2903

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[1 December 1843]
Source of text:
RS:HS 15.393
Summary:

Sends copy of announcement from [Hervé] Faye at Paris observatory of a new comet in Orion. Requests use of JH's letter about double tail on [Halley's] comet in Astronomische Nachrichten. Note from Faye has a gross error in location of comet.

Contributor:
John Herschel Project

Herschel2904

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[12 July 1844]
Source of text:
RS:HS 15.394
Summary:

Announces the discovery of a new comet by [Heinrich] D'Arrest, a university student. Wilhelm Struve has seen it.

Contributor:
John Herschel Project

Herschel2905

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[10 June 1845]
Source of text:
RS:HS 15.395
Summary:

[J. C.] Houzeau has sent a paper on the determination of parabolic elements of a comet. Relays a copy of his method, which HS will examine more closely before publishing.

Contributor:
John Herschel Project

Herschel2906

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[23 December 1845]
Source of text:
RS:HS 15.396
Summary:

Announces the discovery of a new 'planet' by [K. L.] Hencke of Prussia, of the class of 'the 4 small ones' [the asteroids].

Contributor:
John Herschel Project

Herschel2907

From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[22 March 1846]
Source of text:
RS:HS 15.397
Summary:

Circular announcing that [Theodor] Brorsen in Kiel has discovered a new comet. HS adds note that F. W. Bessel has died.

Contributor:
John Herschel Project
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