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Lassell, William in correspondent 
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Herschel11619

From:
Sir John Herschel
To:
William Lassell
Date:
[27 August 1859]
Source of text:
RS:HS 23.271
Summary:

Asks for details of WL's system of speculum polishing and telescope construction as JH is preparing an article on telescopes for the Encyclopaedia Britannica.

Contributor:
John Herschel Project

Herschel3883

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

Herschel11622

From:
Sir John Herschel
To:
William Lassell
Date:
[23 September 1859]
Source of text:
RS:HS 23.278 (extract 1p Harvard: Houghton AAH 67m-67 {48})
Summary:

Comments on WL's information on telescope construction, and adds some of JH's own experience.

Contributor:
John Herschel Project

Herschel11264

From:
William Lassell
To:
Sir John Herschel
Date:
[8 February 1860]
Source of text:
RS:HS 11.156
Summary:

Sends a lithograph of the 4-ft. aperture equatorial. Has made no observations with it yet. Had difficulty with the surface of the speculum. Comments on the drawing and on the use of the instrument. Cannot recollect seeing any of the irregularities pointed out by JH in his letter.

Contributor:
John Herschel Project

Herschel11623

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

Herschel11265

From:
William Lassell
To:
Sir John Herschel
Date:
[13 February 1860]
Source of text:
RS:HS 11.157
Summary:

Pointing out the reasons for some apparent discrepancies in the drawing of his telescope. The drawing was hurriedly done by his daughter.

Contributor:
John Herschel Project

Herschel11624

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

Herschel11266

From:
William Lassell
To:
Sir John Herschel
Date:
[11 December 1860]
Source of text:
RS:HS 11.158
Summary:

Was grateful for the copy of JH's article on the telescope. Sends parcels containing two specimens of 4-ft. specula; comments on these. Weather has been unsuitable for observations.

Contributor:
John Herschel Project

Herschel11267

From:
William Lassell
To:
Sir John Herschel
Date:
[26 July 1861]
Source of text:
RS:HS 11.159
Summary:

Is on the point of departure for Malta and would welcome letters of introduction from JH.

Contributor:
John Herschel Project

Herschel11268

From:
William Lassell
To:
Sir John Herschel
Date:
[23 August 1861]
Source of text:
RS:HS 11.160
Summary:

Thanks JH for his efforts in having Sir Benjamin Brodie provide letters of introduction for WL's time in Malta.

Contributor:
John Herschel Project

Herschel11269

From:
William Lassell
To:
Sir John Herschel
Date:
[31 August 1861]
Source of text:
RS:HS 11.162
Summary:

Details about WL's preparation for departure for Malta.

Contributor:
John Herschel Project

Herschel11270

From:
William Lassell
To:
Sir John Herschel
Date:
[26 November 1861]
Source of text:
RS:HS 11.163
Summary:

About WL's activity in setting up his observatory.

Contributor:
John Herschel Project

Herschel11625

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

Herschel7693

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

Herschel7694

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

Herschel7695

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

Herschel7696

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

Herschel14158

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

Herschel7697

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

Herschel12815

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
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