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DCP-LETT-3999

From:
George Maw
To:
Charles Robert Darwin
Date:
19 Feb 1863
Source of text:
DAR 171: 97
Summary:

Discusses the structure and particular uniformities of the Shropshire coal-seams and surrounding strata; speculates on their origins.

Contributor:
Darwin Correspondence Project

Herschel8349

From:
Sir John Herschel
To:
Jacques Babinet
Date:
[19 February 1863]
Source of text:
RS:HS 19.151 (C: RS:HS 24.10)
Summary:

Suggestions on improving JB's gravimetric balance, constructed on principle of 'Bifilar suspension.' Refers to 1861 report of similar invention by J. A. Brown and another article on this topic.

Contributor:
John Herschel Project

DCP-LETT-3998

From:
Charles Robert Darwin
To:
William Bernhard Tegetmeier
Date:
19 Feb [1863]
Source of text:
Archives of the New York Botanical Garden (Charles Finney Cox Collection)
Summary:

Discusses experiments that WBT will undertake to investigate whether particular pigeon and poultry crosses produce sterile hybrids.

Contributor:
Darwin Correspondence Project

Herschel6363

From:
William Corbett Burder
To:
Sir John Herschel
Date:
[19 February 1863]
Source of text:
RS:HS 5.128
Summary:

Sending him a correction for his article on meteorology relating to the rainfall of Bristol. Intends publishing a book on climate and will send him a copy.

Contributor:
John Herschel Project
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