Search: Darwin, C. R. in correspondent 
1860-1869::1863::02::19 in date 
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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
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