Search: 1860-1869::1868::01 in date 
letter in document-type 
No in transcription-available 
Sorted by:

Showing 8185 of 85 items

From:
Sir John Herschel
To:
Photographic News
Date:
[31 January 1868]
Source of text:
Photographic News, 12 (Jan. 31, 1868), 57
Summary:

Discusses the action of hyposulphite of ammonia on muriate of silver. Gives directions for preparing hyposulfite of silver.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[1868 or later]
Source of text:
RS:HS 7.113
Summary:

Comments on the bad habits creeping into the language of the German Academies. Sends list of papers and also a transcript of GE's paper for the Astronomische Nachrichten.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Herschel (son)
Date:
[26 January 1868]
Source of text:
JHS 6.50
Summary:

Has heard from Emma, son William's wife, that the solar eclipse will occur in the rainy season, and thus will not likely be visible [see JH's 1867-9-29]; JH is wondering if the equipment from the R.S.L. arrived safely.

Contributor:
John Herschel Project
From:
John Gorham
To:
Sir John Herschel
Date:
[14 January 1868]
Source of text:
RS:HS 8.223
Summary:

Some years ago JH witnessed his experiments on the rotation of discs. Has written a paper on this subject and would be glad of his comments on whether he has chosen the right forms for the colors of the circle.

Contributor:
John Herschel Project
From:
Sir Joseph Dalton Hooker
To:
Miles Joseph Berkeley
Date:
--1868?
Source of text:
JDH/2/3/2 f.274, The Royal Botanic Gardens, Kew
Summary:

No summary available.

Contributor:
Hooker Project