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From:
Charles Robert Darwin
To:
John Frederick William Herschel, 1st baronet
Date:
7 May [1848]
Source of text:
The Royal Society (HS6: 15)
Summary:

Sends MS of "Geology" for Manual [Collected papers 1: 227–50]. First parcel lost. Asks JFWH to give advice on an unclear note, translated from Élie de Beaumont, on measuring incline of lava-flows.

Contributor:
Darwin Correspondence Project
From:
Edward Joshua Cooper
To:
George Biddell Airy
Date:
8 May 1848
Source of text:
MM/9/58, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Charles Robert Darwin
To:
John Frederick William Herschel, 1st baronet
Date:
11 May [1848]
Source of text:
The Royal Society (HS6: 12)
Summary:

Describes colour changes from blue to red in valves of operculum of the cirripede genus Ibla.

Contributor:
Darwin Correspondence Project