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DCP-LETT-1973

From:
Charles Robert Darwin
To:
Asa Gray
Date:
12 Oct [1856]
Source of text:
Archives of the Gray Herbarium, Harvard University (6)
Summary:

Thanks AG for the first part of his "Statistics [of the flora of the northern U. S.", Am. J. Sci. 2d ser. 22 (1856): 204–32; 2d ser. 23 (1857): 62–84, 369–403]

and for information on social and varying plants.

Would like to know number of genera of introduced plants in U. S.

Is surprised at some affinities of northern U. S. flora and asks for any climatic explanations.

Asks what proportion of genera common to U. S. and Europe are mundane.

Is glad AG will work out the northern ranges of the European species and the ranges of species with regard to size of genera.

Contributor:
Darwin Correspondence Project

Herschel1113

From:
Sir John Herschel
To:
George Gabriel Stokes
Date:
[12 October 1856]
Source of text:
RS:HS 25.10.11
Summary:

Acknowledges receipt of a paper by [William] Pole, which JH will review.

Contributor:
John Herschel Project

Herschel6822

From:
Warren de La Rue
To:
Sir John Herschel
Date:
[12 October 1856]
Source of text:
RS:HS 6.137
Summary:

Returned late on Thursday. Is gratified by JH's praise of his drawings of Saturn. Includes some further drawings and comments on JH's queries.

Contributor:
John Herschel Project

Tyndall1287

From:
Heinrich Debus
To:
John Tyndall
Date:
am 12 Oct. 1856.
Source of text:
MS JT/1/7/2416-17, RI
Summary:

No summary available.

Contributor:
Tyndall Project
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