Search: Herschel, John in correspondent 
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1840-1849::1847::04 in date 
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From:
Anne Elise Knipping
To:
Sir John Herschel
Date:
1847-4
Source of text:
RS:HS 11.59
Summary:

Comments on the reports of the birthday celebrations for JH's aunt Caroline.

Contributor:
John Herschel Project
From:
Sir Charles Shadwell
To:
Sir John Herschel
Date:
[1 April 1847]
Source of text:
RS:HS 17.198
Summary:

Presents 'tables for facilitating the approximate prediction of occultation and eclipses for any particular place,' so that seamen without specialized backgrounds in mathematics can observe and improve hydrography.

Contributor:
John Herschel Project
From:
William Rowan Hamilton
To:
Sir John Herschel
Date:
[1 April 1847]
Source of text:
unknown
Summary:

Sends some results concerning undisturbed parabolic motion. Laments the Irish famine.

Contributor:
John Herschel Project
From:
William Radcliffe Birt
To:
Sir John Herschel
Date:
[3 April 1847]
Source of text:
RS:HS 4.115
Summary:

Is very grateful for his assistance and encloses the page of the report in which he publicly acknowledges this. Further results since the return of the great atmospheric wave of 1845.

Contributor:
John Herschel Project
From:
Marian Koller
To:
Sir John Herschel
Date:
[4 April 1847]
Source of text:
RS:HS 11.91
Summary:

Sending a series of magnetical and meteorological observations made at the observatory. Comments on these.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[4 April 1847]
Source of text:
RS:HS 19.124
Summary:

Returns WB's proofs. Compliments WB's successes in meteorology. Barometric waves may be caused by something 'complementary' in opposite seasons or hemispheres.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
F. A. Herschel Griesbach
Date:
[4 April 1847]
Source of text:
RS:HS 9.135
Summary:

Has signed the certificate, and stated that FG is known to him.

Contributor:
John Herschel Project
From:
Edward Sabine
To:
Sir John Herschel
Date:
[7 April 1847]
Source of text:
BostonPubLib Ms.Eng.406
Summary:

If given precise instructions, will attempt to obtain the prismatic spectra from Toronto and St. Helena that [Robert] Hunt requested [see Hunt's 1847-3-3].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Robert Hunt]
Date:
[7 April 1847]
Source of text:
BostonPubLib Ms.Eng.406
Summary:

Attached letter from Edward Sabine [see Sabine's 1847-4-7] will allow RH to communicate directly with Sabine.

Contributor:
John Herschel Project
From:
William Rutter Dawes
To:
Sir John Herschel
Date:
[12 April 1847]
Source of text:
RS:HS 6.80
Summary:

Is reading JH's book and marvelling at the condensed amount of information it contains. Has been observing some of Wilhelm Struve's more difficult objects. Regarding the double star Antares. Has been testing his telescope for errors and found it accurate.

Contributor:
John Herschel Project
From:
John P. Gassiot
To:
Sir John Herschel
Date:
[17 April 1847]
Source of text:
RS:HS 8.56
Summary:

Meeting for the formation of a new club took place last Monday. Gives list of persons who attended. To be called the Philosophical Club. Outlines its rules and regulations.

Contributor:
John Herschel Project
From:
William Henry Smyth
To:
Sir John Herschel
Date:
[17 April 1847]
Source of text:
RS:HS 16.295
Summary:

Studies two possible orbits of Gamma Virginis; sends complete descriptions of both, including calculation of the apparent and actual ellipse. The first orbit combines the data of other astronomers.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Rowan Hamilton
Date:
[20 April 1847]
Source of text:
TCD 1493:387
Summary:

On WH's 'Hodograph' and theorems of parabolic motion and the relation between velocities, initial velocities, and time. Praises WH's son. Cape Results nearly finished. Revising book on astronomy. Plans to 'attack' quaternions. Mentions parabolic functions and Benjamin Peirce's claim that the discovery of Neptune was accidental.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Smyth
Date:
[21] April 1847
Source of text:
RS:HS 22.313
Summary:

Skeptical over plan for galvanic illumination of wires. Has not yet seen J. B. Biot article; states he has always held Biot in high regard. Discusses naming of new planet.

Contributor:
John Herschel Project
From:
William Henry Smyth
To:
Sir John Herschel
Date:
[21 April 1847]
Source of text:
RS:HS 16.296
Summary:

Sends angular results from various astronomers using similar epoches.

Contributor:
John Herschel Project
From:
William Rutter Dawes
To:
Sir John Herschel
Date:
[21 April 1847]
Source of text:
RS:HS 6.81
Summary:

Will be pleased to accept his offer of the glass wedges. Bad weather has upset his observations. Gives some of his recent observations. James Challis doubts the existence of a ring round Neptune. Is not impressed by Capt. W. S. Jacob's observations.

Contributor:
John Herschel Project
From:
Georg Merz & Son
To:
Sir John Herschel
Date:
[22 April 1847]
Source of text:
RS:HS 13.36
Summary:

Are preparing an objective for JH, which they expect to send in August.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John P. Gassiot
Date:
[22 April 1847]
Source of text:
RS:HS 8.56 verso
Summary:

Asks JG to allow JH to join the Philosophical Club [see JG's 1847-4-17] on a trial basis for a year or two.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Robert Grove
Date:
[22 April 1847]
Source of text:
RI (C: RS:HS 22.314)
Summary:

Asks to be allowed to join the new Philosophical Club on a trial basis [see letter of same date to John P. Gassiot].

Contributor:
John Herschel Project
From:
John P. Gassiot
To:
Sir John Herschel
Date:
[23 April 1847]
Source of text:
RS:HS 8.57
Summary:

Will forward JH's note. Is pleased he will be joining the new club. Wishes him happiness in his retirement.

Contributor:
John Herschel Project