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Lassell, William in addressee 
1840-1849 in date 
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Herschel11596

From:
Sir John Herschel
To:
William Lassell
Date:
[20 March 1842]
Source of text:
RS:HS 22.114
Summary:

Comments on WL's finding a sixth star in the trapezium of Orion [see WL's 1842-3-10]; lists other catalogues that identify that star.

Contributor:
John Herschel Project

Herschel11602

From:
Sir John Herschel
To:
William Lassell
Date:
[28 August 1846]
Source of text:
RS:HS 22.280
Summary:

Comments on WL's observation of the seventh satellite of Saturn as noted in WL's 1846-8-26.

Contributor:
John Herschel Project

Herschel11603

From:
Sir John Herschel
To:
William Lassell
Date:
[13 September 1846]
Source of text:
RS:HS 22.283
Summary:

Believes that the observations WL has made are quite sufficient to establish the existence of the seventh satellite of Saturn.

Contributor:
John Herschel Project

Herschel11604

From:
Sir John Herschel
To:
William Lassell
Date:
[1 October 1846]
Source of text:
RS:HS 22.285
Summary:

Announces, to WL, the discovery of a new planet beyond Uranus, gives co-ordinates, and urges WL to look for satellites 'with all possible expedition.'

Contributor:
John Herschel Project

Herschel11605

From:
Sir John Herschel
To:
William Lassell
Date:
[1 February 1847]
Source of text:
RS:HS 22.298
Summary:

Ask WL's permission to make reference to WL's sighting of the seventh satellite of Saturn in JH's observations of all the satellites of Saturn.

Contributor:
John Herschel Project

Herschel11608

From:
Sir John Herschel
To:
William Lassell
Date:
[19 January 1848]
Source of text:
RS:HS 23.4
Summary:

Urges WL to make public his observations of the seventh satellite of Saturn as Otto Struve is about to announce his observation of the same body.

Contributor:
John Herschel Project

Herschel11610

From:
Sir John Herschel
To:
William Lassell
Date:
[22 September 1848]
Source of text:
RS:HS 23.37
Summary:

Is pleased to hear of the discovery of further satellites of Neptune.

Contributor:
John Herschel Project

Herschel11611

From:
Sir John Herschel
To:
William Lassell
Date:
[11 October 1848]
Source of text:
RS:HS 23.39
Summary:

Some question of Harvard University observer having observed the satellite [see JH's 1848-9-22] one day before WL.

Contributor:
John Herschel Project

Herschel11248

From:
Sir John Herschel
To:
William Lassell
Date:
[15 October 1848]
Source of text:
RS:HS 11.139 & 23.40 & 23.41
Summary:

Criteria for deciding who can claim to be the discoverer of the satellite. [This letter marked 'not sent on second thoughts; see RS:HS 23.41 for letter sent.]

Contributor:
John Herschel Project
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