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Lassell, William in correspondent 
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From:
Sir John Herschel
To:
William Lassell
Date:
[11 February 1860]
Source of text:
RS:HS 23.297
Summary:

Comments on WL's 4-foot equatorial telescope of which WL sent JH a lithograph [see WL's 1860-2-8].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[13 November 1860]
Source of text:
RS:HS 23.317
Summary:

Comments on WL's nebulae diagrams and asks for more.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[4 May 1862]
Source of text:
RS:HS 23.373
Summary:

As JH is preparing a catalogue of all known nebulae, would WL please provide a complete listing of all he has seen.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[23 October 1864]
Source of text:
RS:HS 24.63
Summary:

Comments on the several drawings of the same nebulae; thanks WL for the invitation to Malta but JH is too ill to accept.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[11 November 1862]
Source of text:
TxU:H/L-0221; Reel 1054
Summary:

Suggests Albert Marth of Durham observatory as possible assistant to WL. JH's notes and diagram of nebular ring.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[24 October 1862]
Source of text:
TxU:H/M-0383.2; Reel 1087
Summary:

Apologizes for returning WL's letter unopened. JH receives many letters with postage due from strangers and does not accept them. Did not recognize WL's address in Malta. Gives summary of JH's 3 Oct. 1862 letter to WL that seems to have been lost.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[31 August 1859]
Source of text:
Harvard: Houghton AAH 67m-67 (48)
Summary:

Discusses installation of a 4-ft. aperture equatorial telescope. Describes plans for a glass polishing machine in great detail.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[23 May 1862]
Source of text:
RAS:JH Archive 12/1.7.2; Reel 10
Summary:

Recently observed nebulae. Changes in island climate reduce observation time. Happy that JH plans to publish all nebulae in one catalogue. Has no new ones to offer. Observations of Saturn's rings. WL's telescope.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[26 September 1862]
Source of text:
RAS:JH Archive 12/1.7.4; Reel 10
Summary:

Delighted with performance of WL's telescopes in Maltese climate. Invites JH to visit. Awaiting JH's catalogue of nebulae. Seeking assistant.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[26 September 1862]
Source of text:
RAS:JH Archive 12/1.7.5; Reel 10
Summary:

Describes galaxy-like gaseous nebula with interior elliptical ring.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[22 October 1862]
Source of text:
RAS:JH Archive 12/1.7.8; Reel 10
Summary:

Received JH's list of nebulae. Will observe and confirm as many as possible. Honored by Alexander Herschel's offer to be WL's assistant. Defines WL's expectations of assistant.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[1 November 1862]
Source of text:
RAS:JH Archive 12/1.7.10; Reel 10
Summary:

Best candidate for WL's assistant seems to be [Albert] Marth of Durham. Describes new planetary nebula.

Contributor:
John Herschel Project
From:
Alexander Stewart Herschel
To:
William Lassell
Date:
[6 June 1874]
Source of text:
RAS:JH Archive 14/4.l.1; Reel 11
Summary:

Encloses inventory of JH's unpublished manuscripts on General History of Double Stars, which AH forwarded to R.A.S. Estimates final total of JH's double star observations.

Contributor:
John Herschel Project