Search: John Herschel in collection 
Herschel, John in correspondent 
Lyell, Charles in correspondent 
1860-1869::1865::01 in date 
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From:
Sir John Herschel
To:
Sir Charles Lyell
Date:
[29 January 1865]
Source of text:
RS:HS 11.430 & 24.83
Summary:

Sending a lump of a substance quarried near Edenderry; has found some very similar in a quarry of his own. Can send some more specimens. Congratulations on his Baronetcy. Has been prostrated with bronchitis.

Contributor:
John Herschel Project
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