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Sykes, William Henry in correspondent 
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From:
William Henry Sykes
To:
Sir John Herschel
Date:
[11 April 1839]
Source of text:
RS:HS 17.139
Summary:

Offers JH professorship of astronomy at Oxford and hopes to see him at meeting of Meteorological Committee.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Sykes
Date:
[12 April 1839]
Source of text:
RS:HS 17.140 (C: RS:HS 22.8)
Summary:

Thanks WS for offer of professorship of astronomy at Oxford, but declines it, partly because of other pursuits and health reasons, and considers his astronomical career terminated.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[27 November 1844]
Source of text:
RS:HS 17.141
Summary:

Regrets that he cannot offer JH the information he needs regarding the stature of service-men, but suggests places for further searching. Shares observations about relationships between dew point and barometer.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[7 July 1845]
Source of text:
TxU:H/M-0514; Reel 1093
Summary:

Reduction of observations will begin immediately.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[4 November 1845]
Source of text:
RS:HS 17.142
Summary:

Expresses satisfaction with results of continued magnetic and meteorological observations in various locations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Sykes
Date:
[11 March 1847]
Source of text:
RS:HS 17.143 (C: RS:HS 22.308)
Summary:

Notes that actinometer observations prove faulty due to problem with instruments. Asks that WS notify Indian observatories to join others in terminating such observations until JH finds method of getting around problem.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[10 August 1847]
Source of text:
RAS:JH Archive 10/5.25; Reel 9
Summary:

Assures JH that [Cape Results] will receive warm welcome in libraries of India. Suggests other recipients there. Send copies with dispatches from India House.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Sykes
Date:
1848[-1-17 or later]
Source of text:
RS:HS 17.144b
Summary:

JH writes to the best of his knowledge about William Mann's competence in various areas.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[17 January 1848]
Source of text:
RS:HS 17.144a
Summary:

Requests letter ascertaining William Mann's competence, assuring his hiring as astronomer at Madras.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[22 March 1850]
Source of text:
RS:HS 17.145
Summary:

Regrets missing JH's visit; discusses influences of atmosphere and solar position on Indian weather and difficulty it causes in obtaining meteorological laws.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[19 April 1850]
Source of text:
RS:HS 17.146
Summary:

Clarifies results of pressure oscillations on two coasts of India as similar despite different weather conditions, and deems results thus unsatisfactory; explores reasons and suggests solutions for lack of success.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[27 April 1850]
Source of text:
RS:HS 17.147
Summary:

Discusses balloon experiments to explain fall of barometer with humidity, and explains more discrepancies in vapor-pressure observations. Mentions new 'Hygrometric condenser' as an alternative to wet bulb experiments.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[3 December 1850]
Source of text:
TxU:H/M-0515; Reel 1093
Summary:

Thanks for signing certificate for [C. M.] Elliott. Sends extracts from George Buist's history of heat storms in India, with evidence of great masses of ice dropped by these storms.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[6 July 1851]
Source of text:
TxU:H/M-0516; Reel 1093
Summary:

Glad that Dr. [Duncan] Stewart received promise from Mr. Prinsep of cadetship [in H.E.I.C.] for Stewart's son. WS cannot promise same for young [George] Maclear but will add Maclear to list of applicants for WS's patronage.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[13 November 1851?]
Source of text:
RS MM.16.164
Summary:

Reports on and discusses applications of hourly wet bulb observations in ocean.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[22 November 1851]
Source of text:
RS:HS 17.148
Summary:

Noting discrepancy between dew points obtained by wet bulb and direct methods, WS cannot say which is nearer the truth; suspects that both have inaccuracies.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[1852?]
Source of text:
RS MM.16.165
Summary:

Suggests possible times to meet with JH.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[15 January 1852]
Source of text:
RS:HS 17.149
Summary:

Agrees with papers demonstrating falsity of present methods of correcting barometer for moisture and 'dogma of one gas being a vacuum to another.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Sykes
Date:
[2 February 1852]
Source of text:
RS MM 16.171
Summary:

Suggests course of action regarding 'Gen'l. Cullen's [?]' hydrometric observations submitted to R.S.L.

Contributor:
John Herschel Project
From:
William Henry Sykes
To:
Sir John Herschel
Date:
[4 May 1852]
Source of text:
Harvard: Houghton AAH 67m-67 (99)
Summary:

Asks JH to look at a letter by John Forbes Watson, whose paper the R.S.L. recently refused to read.

Contributor:
John Herschel Project