Search: Tyndall, John in addressee 
John Herschel Project in contributor 
1850-1859::1856 in date 
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From:
Sir John Herschel
To:
John Tyndall
Date:
[27 July 1856]
Source of text:
RS:HS 17.383b (C: 23.176; C: RI 499)
Summary:

Thanks for papers on diamagnetism and lecture on 'slaty cleavage.' Compares with phenomenon of 'ringing coins' in mint. Explains with examples conformity of JT's views with JH's own on geological stratification. Praises simplicity yet completeness of JT's work.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[31 July 1856]
Source of text:
RS:HS 23.175 (C: RI 502)
Summary:

Clarifies letter on motion and structure modification of glaciers. JH thinks glacier ice unfavorable for exhibiting JT's phenomenon [see JT's 1856-7-30].

Contributor:
John Herschel Project