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Selwyn, William in correspondent 
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From:
William Selwyn
To:
Sir John Herschel
Date:
[1870]
Source of text:
RS:HS 15.513
Summary:

Thanks JH for drawing of solar maculae from 1854-61. Some hesitancy about the accuracy of [Alexander?] Wilson's observations and hypotheses. Sixty people wish to travel to Spain to see eclipse of the sun.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[23 April 1870]
Source of text:
RS:HS 24.304
Summary:

Asks whether WS has photographs of the sun for 21 and 22 April. Notes how curious sunspot activity has been. Doubts that such is reconcilable with the notion of 'meteoric in-falls.'

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[25 April 1870]
Source of text:
RS:HS 15.507
Summary:

Is sending solar autographs. Notes that in groups of spots the larger precede the smaller spots. Can JH form any theories from this?

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
25?] April? [1870
Source of text:
RS:HS 15.517
Summary:

Detached postscript that discusses the margins of the two photographs, which seem to show that all planets are in the near hemisphere.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[30 April 1870]
Source of text:
RS:HS 24.309
Summary:

Is returning March heliographs. Discusses the appearance of the spots. Has not received the April heliographs.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[2 May 1870]
Source of text:
RS:HS 24.310
Summary:

Wants to compare Mr. Titterton's photographs of the spot groups to [Warren] de La Rue's. Has tried to determine if some localities regularly have spots.

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[11 May 1870]
Source of text:
RS:HS 15.508
Summary:

Desires permission to present JH's 'diagram of "macularity"' to the R.A.S.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[12 May 1870]
Source of text:
RS:HS 24.313
Summary:

The research shows no particularly 'maculiferous' area on the sun, but WS may, as WS requested, present 'data' to the R.A.S. Has noticed two new spots on helioautographs on 20 and 27 April.

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[11 June 1870]
Source of text:
RS:HS 15.509
Summary:

Discusses the different strata of the ocean and [William] Carpenter's lecture on deep sea dredging. Is digging an artesian well.

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[16 June 1870]
Source of text:
RS:HS 15.510
Summary:

Sends two copies of JH's 'macular conspectus.' Mr. Titterton was very pleased that JH approved of his work.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[17 June 1870]
Source of text:
RS:HS 24.320
Summary:

Sends diagrams showing three new couplets of sunspots. The sun is entering a new phase of activity. Sends drawings made with a glass pen by his son Alexander.

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[24 June 1870]
Source of text:
RS:HS 15.511
Summary:

Thanks JH for the drawings. Will send new solar autographs showing macula. Is working on the autographic series of the activity of the sun during its 11 year period.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[31 August 1870]
Source of text:
RS:HS 24.329
Summary:

Discusses the movement of the 'great group' of sunspots over the last six months. Asks WS to sign a certificate for his son [John].

Contributor:
John Herschel Project
From:
William Selwyn
To:
Sir John Herschel
Date:
[2 September 1870]
Source of text:
RS:HS 15.512
Summary:

Has been trying to make pendulum curves. Believes they may help explain the different sunspot forms. Thanks JH for the spectroscopic observation memoirs.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Selwyn
Date:
[4 September 1870]
Source of text:
RS:HS 24.330
Summary:

Thanks WS for August 29 photographs. Is sending JH's son's [John's] certificate. Pities the 'fallen Emperor' [Napoleon III].

Contributor:
John Herschel Project