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From:
Charles Robert Darwin
To:
Robert Hutton
Date:
[Apr 1846]
Source of text:
American Philosophical Society (Mss.B.D25.54)
Summary:

Returns copy [of J. Hortic. Soc. Lond.]. Mentions article by William Herbert ["Local habitation and wants of plants", J. Hortic. Soc. Lond. 1 (1846): 44–9].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Richard Owen
Date:
[21 Apr 1846]
Source of text:
American Philosophical Society (Mss.B.D25.48)
Summary:

Asks to visit RO to talk about mammifers of the [Rio] Plata.

Contributor:
Darwin Correspondence Project
From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
[11–15 Apr 1846]
Source of text:
DAR 104: 205
Summary:

Hugh Falconer gives no specific objections to Forbes’s views.

Botanical contrast between Cape of Good Hope and the rest of Africa is as strong as that between Australia and India.

Wishes CD would leave off snuff.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Ernst Dieffenbach
Date:
6 Apr [1846]
Source of text:
J. A. Stargardt (dealers) (Catalogue 574 11–13 November 1965)
Summary:

On geological works of Tschudi and Buch.

"My health keeps indifferent & I do not suppose I shall ever be a strong man again: everything fatigues me, & I can work but little at my writing: this summer, however, I shall get out my geology of S. America".

"I found Bronn’s Geschichte, which you recommended me, very useful, for references to facts on variation".

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
10 Apr [1846]
Source of text:
DAR 114: 59
Summary:

Is pleased JDH will attend to polymorphism and also with the botanical relation, as stated by JDH, between Africa and Java.

Would welcome any information on impregnation in the bud.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
[16 Apr 1846]
Source of text:
DAR 114: 60
Summary:

CD’s suggestions for improving a paragraph by JDH.

On distribution of certain species and their variation relative to a central, typical form.

Contributor:
Darwin Correspondence Project
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From:
William Hopkins
To:
Charles Robert Darwin
Date:
27 Apr 1846
Source of text:
DAR 39: 54–6
Summary:

Writes concerning CD’s "geometrico-geological problem". Attempts to square some of CD’s observations with certain geometrical theories concerning geological elevation.

Contributor:
Darwin Correspondence Project
From:
Richard Owen
To:
Charles Robert Bree
Date:
24 April 1846
Source of text:
MM/21/58, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Robert Hunt
To:
Sir John Herschel
Date:
[6 April 1846]
Source of text:
RS:HS 10.122
Summary:

Has been pursuing his magnetic experiments with crystals and will be publishing a memoir on them. Comments on these experiment. Is there a difference in the mass of the earth at the poles?

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Stuart Mill
Date:
[2 April 1846]
Source of text:
RS:HS 25.6.32
Summary:

Continues JH's defense of Laplace's writings on probabilities [see JH's 1845-12-22].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Stuart Mill
Date:
[3 April 1846]
Source of text:
RS:HS 25.6.33
Summary:

A note to accompany a working out in convenient form an example of Laplace's probability ideas. [Enclosure not found.]

Contributor:
John Herschel Project
From:
John Stuart Mill
To:
Sir John Herschel
Date:
[8 April 1846]
Source of text:
RS:HS 12.339
Summary:

JH's second letter has convinced him. Has now written a new conclusion to the chapter showing the principles of P. S. Laplace in a new light. Does not think Laplace's example is a fair type. Has already rewritten the chapter on the Doctrine of Chances.

Contributor:
John Herschel Project
From:
Roderick Impey Murchison
To:
Sir John Herschel
Date:
[25 April 1846]
Source of text:
RS:HS 12.411
Summary:

Giving days on which the Council could be called. Who shall be president of Section 'A'. Could JH think of suitable persons for Chairmen and Secretaries? Sir J. Richardson is on the spot and will be president of the zoologists.

Contributor:
John Herschel Project
From:
Hans Christian Oersted
To:
Sir John Herschel
Date:
[8 April 1846]
Source of text:
RS:HS 13.169
Summary:

Sending a German translation of an unfinished work of HO. Regrets that so few people can read the Danish language. Is grateful for JH's papers.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Mr. M.
Date:
[16 April 1846]
Source of text:
APS B.H435p.13
Summary:

Compliments of JH and his wife.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[29 April 1846]
Source of text:
RGO 6.401.193
Summary:

A note to arrange a meeting to discuss the propriety of continuing the Kew Observatory.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Adolphe Quetelet
Date:
[12 April 1846]
Source of text:
Académie belgique: #23 (C: Académie belgique: #24)
Summary:

Looks to reap fruits of observations. AQ's treatise on atmospheric waves has not arrived. R.S.L. has refused to 'receive and retain works communicated through them.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[1846-4-26 or earlie
Source of text:
EUL:Gen523/4/44
Summary:

Suggests dates for upcoming B.A.A.S. meeting that will allow time to get report on Kew Observatory and committee meeting.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[26 April 1846]
Source of text:
EUL:Gen523/4/32
Summary:

Approves date of B.A.A.S. meeting. Will consult with [Charles?] Wheatstone about date of Kew committee meeting.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[29 April 1846]
Source of text:
EUL:Gen523/4/33
Summary:

Probably cannot attend Kew meeting after 10th; has suggested 6th or 7th. Wishes to invite Michael Faraday as 'Physical Chair,' but knows of Faraday's poor health.

Contributor:
John Herschel Project