Search: Herschel, John in correspondent 
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John Herschel Project in contributor 
1800-1809 in date 
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From:
Alexander Rogers
To:
Sir John Herschel
Date:
[11 November 1807]
Source of text:
RS:HS 14.386
Summary:

Has arrived in Scotland. Recently witnessed a large comet. Thanks JH and family for hospitality at Slough.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[1 January 1808]
Source of text:
RS:HS 14.387
Summary:

Thanks JH for information concerning the comet. Planned to build telescope with object glasses separated from each other. Optician said this would not correct spherical and chromatic aberrations. Wants advice.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[22 February 1808]
Source of text:
RS:HS 14.388
Summary:

Wishes to teach privately. Asks William Herschel to write a recommendation certificate. Weather has been problematic. Sends greeting to the elder Herschels.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
1808-3
Source of text:
RS:HS 14.389
Summary:

Concerned over illness of William Herschel. Discusses 'Evolution of Curve Lines.' Describes [Christiaan] Huygens's terms for evolution of curves. Offers advice to avoid problems with them.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Thomas] Baldwin [Sr.]
Date:
[18 May 1808]
Source of text:
TxU:H/L-0079; Reel 1054 (C: TxU:H/M-0616.2; Reel 1086)
Summary:

Recalls JH's visit to Hammersmith. Asks TB to permit JH's cousin Mary Baldwin to visit Slough at time of Ascot races. Received letter from [TB's daughter] Sophia.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[5 November 1808]
Source of text:
RS:HS 14.390
Summary:

Grateful for letter from Brighton. Agrees with JH concerning comet. Is suspicious of those who claim it is the same comet that was seen one year previously.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[2 January 1809]
Source of text:
RS:HS 14.391
Summary:

Describes the difficulty of [P. Laplace's] Mécanique céleste. Has a new pupil. Discusses proper boundary of a front view mirror.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[25 March 1809]
Source of text:
RS:HS 14.392
Summary:

Discusses problem of the ellipse and offers a method of solving it. States the proper boundary of a front mirror is too difficult to ascertain. Still having problems with teaching.

Contributor:
John Herschel Project
From:
Alexander Rogers
To:
Sir John Herschel
Date:
[20 September 1809]
Source of text:
RS:HS 14.393
Summary:

Describes lunar rainbow seen on 22 August. Congratulates JH on his mathematical attainments. Describes his enjoyment of mathematics. Hopes JH will continue to correspond.

Contributor:
John Herschel Project