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John Herschel Project in contributor 
1840-1849::1842 in date 
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From:
Sir John Herschel
To:
Thomas I. M. Forster
Date:
[13 February 1842]
Source of text:
Bodleian Library, Oxford
Summary:

Has been ill for two months. Will be visited by Dr. Andrew Smith shortly. Hopes TF can come to Collingwood to meet Smith.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
R.S.L. Physical Committee
Date:
[17 February 1842]
Source of text:
RS MM 11.171 & 173
Summary:

Discusses how exceptional observations of meteorological and magnetical phenomena should be recorded and what significance should be attached to them. Cannot attend next meeting of committee.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[27 February 1842]
Source of text:
RGO 6.427.74
Summary:

Thanks GA for exercising GA's usual discretion in the matter of the funding of Charles Babbage's calculating machine [see GA's 1842-9-26].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Francis Baily
Date:
[1842-3?]
Source of text:
RS:HS 3.285
Summary:

Proposes to come to London to visit him. Has just received the proofs of Robert Maine's paper on parallax.

Contributor:
John Herschel Project
From:
William Rutter Dawes
To:
Sir John Herschel
Date:
[2 March 1842]
Source of text:
RS:HS 6.60
Summary:

Has received from William Lassell some of the new observations he carried out with his new 9" speculum. Comments on these and various clusters of stars changing their position.

Contributor:
John Herschel Project
From:
Roderick Impey Murchison
To:
Sir John Herschel
Date:
[5 March 1842]
Source of text:
RS:HS 12.402
Summary:

Sends a memoir he has scribbled off for next Wednesday's meeting. Would like JH's advice on several points.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
9] March [1842
Source of text:
TxU:H/L-0587.4; Reel 1058
Summary:

Remarks that he is 50 years old, and that he and CH have 'seen something of that odd and most changeable compound called Human Nature.'

Contributor:
John Herschel Project
From:
Thomas I. M. Forster
To:
Margaret Brodie Herschel
Date:
[9 March 1842]
Source of text:
RS:HS 7.330
Summary:

Will be pleased to come to Collingwood at any time and hopes the Herschels will also visit them. Her son was right about the word quinque. Comments on the various ways different people observe the colors of stars. Will be pleased to see the poetic scraps.

Contributor:
John Herschel Project
From:
George Biddell Airy
To:
Sir John Herschel
Date:
[10 March 1842]
Source of text:
RS:HS 1.101 (C: RGO 6.340.341)
Summary:

Regarding JH's receipt of the 'Standard' reports. Remarks on the electrometer and barometer in the recent storm.

Contributor:
John Herschel Project
From:
Roderick Impey Murchison
To:
Sir John Herschel
Date:
[10 March 1842]
Source of text:
RS:HS 12.403
Summary:

Many thanks for JH's explanations, which gave satisfaction to the geologists. Gives two queries of his own for which he would like clarification. Can they print JH's Alpine phenomena memoir?

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[10 March 1842]
Source of text:
RS:HS 11.125
Summary:

Sending a description of the observatory he has erected, containing an equatorially mounted Newtonian reflector. Has high opinion of its efficiency. Has detected a sixth star near the trapezium of Orionis.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[11 March 1842]
Source of text:
RGO 6.368.646
Summary:

Arranging a visit for GA to Collingwood.

Contributor:
John Herschel Project
From:
Adolphe Quetelet
To:
Sir John Herschel
Date:
[14 March 1842]
Source of text:
RS:HS 14.242
Summary:

Sends works on meteorology and instructions for natural periodic phenomena. More proselytes in horary observations. Asks for JH's recommendations for those observing meteors in the other hemisphere.

Contributor:
John Herschel Project
From:
George Biddell Airy
To:
Sir John Herschel
Date:
[15 March 1842]
Source of text:
RS:HS 1.102 (C: RGO 6.368.648)
Summary:

Regarding his letter writing. Has a promise of a trip on the Dover Railway.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[15 March 1842]
Source of text:
George Eastman House, 12.17
Summary:

Believes that the operative rays in JH's thermographic process are neither 'calorific' nor 'thermal'.

Contributor:
John Herschel Project
From:
'Q in a Corner'
To:
Sir John Herschel
Date:
[16 March 1842]
Source of text:
TxU:H/M-0908; Reel 1083
Summary:

Encloses newspaper clipping that reports JH is member of commission of inquiry on weights and measures. Protests that the poor are defrauded more by false scales than by nonstandard weights. Proposes remedy.

Contributor:
John Herschel Project
From:
Alfred Gautier
To:
Sir John Herschel
Date:
[18 March 1842]
Source of text:
RS:HS 8.85
Summary:

Regarding the publication of his own observations on Halley's Comet; comments on these. [L. F.] Wartmann was very pleased with the results of his recent visit to England. Has been occupied with political problems. Looks forward to seeing the completion of JH's Cape observations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[18 March 1842]
Source of text:
RGO 6.368.649
Summary:

Final arrangements for GA's visit to JH [see GA's 1842-3-15].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[20 March 1842]
Source of text:
Geological Society
Summary:

Responds to RM's request for an analysis of the cause of the difference in climate between Orenburg and Catherineburg in Russia. Agrees that Geological Society can print JH's Alpine memoir.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[20 March 1842]
Source of text:
RS:HS 22.114
Summary:

Comments on WL's finding a sixth star in the trapezium of Orion [see WL's 1842-3-10]; lists other catalogues that identify that star.

Contributor:
John Herschel Project