Search: Herschel, John in correspondent 
1860-1869::1865 in date 
Lyell, Charles in author 
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Herschel11518

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[31 January 1865]
Source of text:
RS:HS 11.431
Summary:

Origin of siliceous minerals sent by JH. Planning tenth edition of Principles of Geology. Convinced that changes in position of land and sea were principal causes of climate changes. Questions [James] Croll's theory of astronomical influences on climate, based on data from U. J. J. Le Verrier. Compares earth-pillars in Rhone valley with those in Tyrol. Wants tenth edition to include woodcut of JH's [1821?] drawings of earth-pillars.

Contributor:
John Herschel Project

Herschel11519

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[11 February 1865]
Source of text:
RS:HS 11.432
Summary:

Regarding the editions in which he cited JH's paper. Further comments on James Croll's paper, and on the effects of glacial and astronomical events. Is the quantity of heat radiated by the sun in the course of the year always the same? Thanks for the drawings of the Botzen columns.

Contributor:
John Herschel Project

Herschel11520

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[16 February 1865]
Source of text:
RS:HS 11.434
Summary:

Has ordered that a copy of his new 6th edition of the Elements [of Geology] should be sent to JH. He wants the drawings of the earth pillars for the 10th edition of his Principles dealing with the effect of rain. JH's drawing made a great impression on him.

Contributor:
John Herschel Project

Herschel11521

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[21 February 1865]
Source of text:
RS:HS 11.436
Summary:

Impressed by JH's [1824] drawings of earth-pillars in Botzen. Plans to visit them this year. Causes of earth-pillars. Speculates on climate changes on planet Mars.

Contributor:
John Herschel Project

Herschel11522

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[4 March 1865]
Source of text:
RS:HS 11.437
Summary:

Took JH's box of specimens and had a discussion with William Logan, A. C. Ramsay, and some young surveyors, one of whom had examined JH's neighborhood. Similar rhomboids to the Irish ones have been located in Wales. Hopes to have a discussion on this subject later. Can JH give, or refer him to data, the temperature of celestial space without the sun? Returns the drawings with many thanks.

Contributor:
John Herschel Project

Herschel11524

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[28 April 1865]
Source of text:
RS:HS 11.439
Summary:

Discussion on JH's geological specimens took place at the Geological Society on Wednesday. Gives some of the points raised at the meeting. Regarding the length of time that separates the extremes of eccentricity of the earth's orbit. Has raised the matter with G. B. Airy.

Contributor:
John Herschel Project

Herschel11525

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[1 May 1865]
Source of text:
RS:HS 11.440
Summary:

Has just received the accompanying letter from James Croll so that JH can save himself the trouble of answering CL's query.

Contributor:
John Herschel Project

Herschel11526

From:
Sir Charles Lyell
To:
Sir John Herschel
Date:
[28 November 1865]
Source of text:
RS:HS 11.441
Summary:

Sending the results of his comparison of JH's drawing and the actual earth pillars of Ritten and Stalden.

Contributor:
John Herschel Project
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