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From:
Richard Brinsley Hinds
To:
Charles Robert Darwin
Date:
21 Apr 1843
Source of text:
DAR 166: 219
Summary:

Replies to queries by CD. Describes Clipperton Rock [SW. of Mexico] and Cocos Island. Mentions possible species of Cactornis. Discusses depth of water at Bow Island [Hao, Tuamotu Archipelago], and occurrence of coral formations at various islands.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Gideon Algernon Mantell
Date:
21 [Apr 1843]
Source of text:
Alexander Turnbull Library, National Library of New Zealand (Mantell papers, MS-Papers-0083-033-4)
Summary:

Regrets that he can offer little aid. If he sees Captain FitzRoy, he will give him GAM’s letter to read at leisure.

Contributor:
Darwin Correspondence Project
From:
Thomas Henderson
To:
Sir John Herschel
Date:
[21 April 1843]
Source of text:
RS:HS 9.304
Summary:

Regarding the recent comet, believes it to be the one of 1668. Does not feel competent to comment on the proposal to change the names and boundaries of the constellations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Thomas Andrews
Date:
[21 April 1843]
Source of text:
RS:HS 22.152
Summary:

Thanks TA for papers on heat of acid-base reactions.

Contributor:
John Herschel Project