From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[16 January 1857]
Source of text:
RS:HS 6.293
Summary:
Thanks for the magic square, which he is now returning. Seems no end to the possibilities of such squares.
Contributor:
John Herschel Project
From:
John Tyndall
To:
Thomas Archer Hirst
Date:
16th Dec Jan. 1857
Source of text:
MS JT/1/T/636, RI
Summary:
No summary available.
Contributor:
Tyndall Project
From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
[16 Jan 1857]
Source of text:
DAR 205.9: 394
Summary:
Enumerates fossil mammals known in Secondary strata.
Lack of angiosperm plants in rocks older than Chalk is no reason to anticipate rarity of warm-blooded quadrupeds.
Contributor:
Darwin Correspondence Project
From:
Sir John Herschel
To:
William Henry Sykes
Date:
[16 January 1857]
Source of text:
RS:HS 17.152 (C: RS:HS 23.188)
Summary:
Interprets [John] Dalton's theory of the nonelasticity of gas particles, expressing its limitations, particularly in regard to a Mr. Paton's paper.
Contributor:
John Herschel Project