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From:
Charles Robert Darwin
To:
John Forbes Royle
Date:
[16 Apr – 21 May 1847]
Source of text:
DAR 147: 400
Summary:

CD understands that JFR cannot lend him the volumes [of Trans. Agric. & Hortic. Soc. India] at present. Thanks for offer to inform him of other works on the breeds of animals in India.

CD fears his belonging to the new club [Philosophical Club of the Royal Society] would be useless, since he is seldom able to dine out.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
7 Apr [1847]
Source of text:
DAR 114: 84
Summary:

JDH’s proposed India trip.

Will sorely miss discussions with JDH on species theory.

CD is getting on wretchedly with cirripedes.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
William Henry Harvey
Date:
[7 Apr 1847]
Source of text:
Trinity College Dublin, Department of Botany, Herbarium
Summary:

Descriptions of the algae specimens found on the Beagle voyage.

Contributor:
Darwin Correspondence Project
From:
Hewett Cottrell Watson
To:
Joseph Dalton Hooker
Date:
12 Apr 1847
Source of text:
DAR 47: 156–9
Summary:

[Copy made by CD’s amanuensis.] Discusses the rarity of intermediate forms.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Robert Patterson
Date:
17 Apr [1847]
Source of text:
Praeger 1935 , p. 712
Summary:

Admires RP’s volume [Introduction to zoology, pt 1 (1846)]; he has condensed a great deal of accurate information. CD hopes some good naturalists will spring up as a result.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
[18 Apr 1847]
Source of text:
DAR 114: 86
Summary:

Thanks for H. C. Watson’s interesting letter. Disagrees with him on intermediate varieties.

CD has read latest numbers of JDH’s The botany of the Antarctic voyage [pt I, Flora Antarctica (1844–7)]; notes several sentences against "us Transmutationists".

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
John Forbes Royle
Date:
[12 Apr – 17 May 1847]
Source of text:
The Huntington Library (HM 12879)
Summary:

Will send village carrier for volumes [of the Trans. Agric. & Hortic. Soc. India].

Contributor:
Darwin Correspondence Project
From:
Charles Babbage
To:
(Woronzow?) Greig
Date:
26 Apr 1847
Source of text:
MSB1 / 259, Dep. c. 369, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse
From:
Sir John Herschel
To:
F. A. Herschel Griesbach
Date:
[4 April 1847]
Source of text:
RS:HS 9.135
Summary:

Has signed the certificate, and stated that FG is known to him.

Contributor:
John Herschel Project
From:
William Robert Grove
To:
Sir John Herschel
Date:
[27 April 1847]
Source of text:
RS:HS 9.148
Summary:

Has received JH's letter from Gassiot and submitted it to the committee dealing with members of the Philosophical Club.

Contributor:
John Herschel Project
From:
Edward Craven Hawtrey
To:
Sir John Herschel
Date:
[26 April 1847]
Source of text:
RS:HS 10.173
Summary:

Would like some suggestions for books to be awarded for the Maths prize at Eton.

Contributor:
John Herschel Project
From:
Anne Elise Knipping
To:
Sir John Herschel
Date:
1847-4
Source of text:
RS:HS 11.59
Summary:

Comments on the reports of the birthday celebrations for JH's aunt Caroline.

Contributor:
John Herschel Project
From:
Marian Koller
To:
Sir John Herschel
Date:
[4 April 1847]
Source of text:
RS:HS 11.91
Summary:

Sending a series of magnetical and meteorological observations made at the observatory. Comments on these.

Contributor:
John Herschel Project
From:
Georg Merz & Son
To:
Sir John Herschel
Date:
[22 April 1847]
Source of text:
RS:HS 13.36
Summary:

Are preparing an objective for JH, which they expect to send in August.

Contributor:
John Herschel Project
From:
James Clark Ross
To:
Sir John Herschel
Date:
[30 April 1847]
Source of text:
RS:HS 14.429
Summary:

Wants JH to name the circle of uniform temperature of the ocean near the equator. Explains the circle of uniform temperature.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Robert Grove
Date:
[22 April 1847]
Source of text:
RI (C: RS:HS 22.314)
Summary:

Asks to be allowed to join the new Philosophical Club on a trial basis [see letter of same date to John P. Gassiot].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Rowan Hamilton
Date:
[20 April 1847]
Source of text:
TCD 1493:387
Summary:

On WH's 'Hodograph' and theorems of parabolic motion and the relation between velocities, initial velocities, and time. Praises WH's son. Cape Results nearly finished. Revising book on astronomy. Plans to 'attack' quaternions. Mentions parabolic functions and Benjamin Peirce's claim that the discovery of Neptune was accidental.

Contributor:
John Herschel Project
From:
William Robert Grove
To:
Sir John Herschel
Date:
[26 April 1847]
Source of text:
RI
Summary:

Announces next meeting of Philosophical Club.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Robert Grove
Date:
[1847-4-26 or later]
Source of text:
RI
Summary:

Asks time and place of next meeting of Philosophical Club, having received invitation lacking that information.

Contributor:
John Herschel Project
From:
Sir Charles Shadwell
To:
Sir John Herschel
Date:
[1 April 1847]
Source of text:
RS:HS 17.198
Summary:

Presents 'tables for facilitating the approximate prediction of occultation and eclipses for any particular place,' so that seamen without specialized backgrounds in mathematics can observe and improve hydrography.

Contributor:
John Herschel Project