Search: Herschel, John in correspondent 
Howlett, Frederick in correspondent 
1860-1869::1864 in date 
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Herschel10635

From:
Frederick Howlett
To:
Sir John Herschel
Date:
[25 January 1864]
Source of text:
RS:HS 10.15
Summary:

Comments on the sun spots he has been observing, and some new phenomenon. Any chance of a visit from JH?

Contributor:
John Herschel Project

Herschel10636

From:
Sir John Herschel
To:
Frederick Howlett
Date:
[26 January 1864]
Source of text:
RS:HS 24.26
Summary:

On the observation of sun spots.

Contributor:
John Herschel Project

Herschel10859

From:
Frederick Howlett
To:
Sir John Herschel
Date:
19] March [1864
Source of text:
RS:HS 19.227
Summary:

Drawing of 'the singular mottled appearance of portions of the Sun's disk ... March 19th 1864'.

Contributor:
John Herschel Project

Herschel10638

From:
Frederick Howlett
To:
Sir John Herschel
Date:
[22 March 1864]
Source of text:
RS:HS 10.16
Summary:

Has returned James Nasmyth's letter and has never seen Warren de La Rue's letter. Comments on Nasmyth's 'willow leaves.' Have been observed at Greenwich Observatory. Thanks for his remarks on the best kind of eye-piece.

Contributor:
John Herschel Project

Herschel10639

From:
Frederick Howlett
To:
Sir John Herschel
Date:
[27 April 1864]
Source of text:
RS:HS 10.17
Summary:

Hopes the JH's are all well. Would like an eye-piece made by Mr. Cook[e] or any leading optician on the principles of JH as laid down in his paper in R.S.P.T. Shall he refer the optician to this paper?

Contributor:
John Herschel Project

Herschel10640

From:
Sir John Herschel
To:
Frederick Howlett
Date:
[30 April 1864]
Source of text:
RS:HS 24.42
Summary:

More on the construction of a good optical eyepiece for solar observations [see FH's 1864-4-27].

Contributor:
John Herschel Project

Herschel10641

From:
Frederick Howlett
To:
Sir John Herschel
Date:
[9 May 1864]
Source of text:
RS:HS 10.19
Summary:

Is grateful for his communication on the proposed solar eyepiece. Will call round on his way to town to ascertain if he can leave the manuscript with [Thomas?] Cooke, the instrument maker, so that he can have some idea of the work involved. James Nasmyth will pay attention to screen projection.

Contributor:
John Herschel Project
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