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Herschel14429

From:
Edward Sabine
To:
Sir John Herschel
Date:
[31 October 1859]
Source of text:
TxU:H/M-0526.10; Reel 1093
Summary:

Proper procedure for communicating with Charles Grey. Cost and effectiveness of self-registering instruments versus older visual instruments. ES's method of estimating observatory expenses. Importance of observatory in Shanghai.

Contributor:
John Herschel Project

Herschel9473

From:
Henry W. Field
To:
Sir John Herschel
Date:
[31 October 1859]
Source of text:
RS:HS 7.219
Summary:

Is grateful for JH's testimonial, which will doubtless be of great value.

Contributor:
John Herschel Project

DCP-LETT-2513

From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
31 [Oct 1859]
Source of text:
American Philosophical Society (Mss.B.D25.175)
Summary:

Further discussion of origin of domestic dog breeds.

Effects of crossing separate races.

Comments on rate of artificial and natural selection.

The origin of pigeon breeds.

Contributor:
Darwin Correspondence Project
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