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Birt, William Radcliffe in addressee 
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From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[23 September 1838]
Source of text:
RS:HS 19.75
Summary:

Checked June observations of Mr. Robertson in Athenaeum. Found WB's statement correct [see WB's 1831-9-11]. Wrote to Meteorological Society for explanation. Thanks for pointing out difference in March observations. JH is honorary member of [Meteorological] Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[22 May 1840]
Source of text:
RS:HS 19.79-80 (C: RS:HS 22.52)
Summary:

How to reduce barometer observations and project them in curves. R.S.L. will provide table by H. C. Schumacher for this purpose. How to obtain 'law of decimal oscillations' for each station. WB's name will be affixed to results. JH needs receipt for observations, which belong to South African Literary and Philosophical Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[18 July 1840]
Source of text:
RS:HS 19.81
Summary:

L. A. J. Quetelet's observations follow centigrade thermometer and French meter. Latitude and longitude for five sites. Three sites are unknown to JH. Hopes WB completes [reduction of barometer observations] before B.A.A.S. meeting.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[24 July 1840]
Source of text:
RS:HS 19.82
Summary:

Advice on how to project barometric observations onto curves.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[9 September 1840]
Source of text:
RS:HS 19.84
Summary:

WB's tables [of barometer observations] are beautifully executed. Will submit them to B.A.A.S. Notes dissimilarity of British and Irish data.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[14 December 1840]
Source of text:
RS:HS 19.85
Summary:

Sends barometer observations from Flushing series, Elias Loomis in U.S., and [J. S.] McCord in Montreal. Can WB prepare these before next B.A.A.S. meeting?

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[28 December 1840]
Source of text:
RS:HS 19.86
Summary:

Returns WB's 'Curves,' which JH presented to B.A.A.S. Sends results of 1837-1838 [barometer] observations by Captain [Edward] Belcher along Pacific coast of North and Central America.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[16 March 1841]
Source of text:
RS:HS 19.88
Summary:

Progress on barometer curves. Invites WB to send report, to be read at B.A.A.S. meeting in July.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[20 April 1841]
Source of text:
RS:HS 19.89
Summary:

Sends missing barometer observations from Montreal, Flushing, and Albany. B.A.A.S meeting postponed.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[4 June 1841]
Source of text:
RS:HS 19.90
Summary:

Received WB's report on barometer observations. Admires perfect finish of work.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[19 July 1841]
Source of text:
RS:HS 19.91
Summary:

Fully examined WB's report [on barometer observations]. Agrees to combine British and Continental observations. Curves clearly show atmospheric processes. Likes WB's suggestion of tracing atmospheric wave beyond 24 hours; will propose this to B.A.A.S. Irregularity of Asiatic and South African data.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[26 July 1841]
Source of text:
RS:HS 19.92
Summary:

Cambridge barometer observations. Postponed WB's detailed report until 1842 B.A.A.S. meeting. This year JH will report generally on atmospheric curves and WB's notes. Hopes WB will attend to give explanations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[1 December 1841]
Source of text:
RS:HS 19.94
Summary:

Heard of WB's bout with typhus. Interest in atmospheric waves should ensure publication of WB's article in Athenaeum. Will write editor on WB's behalf. Awaits completion of atmospheric curves for B.A.A.S. Congratulations on recently acquired office.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[13 June 1842]
Source of text:
RS:HS 19.96
Summary:

Reviews WB's assistance in JH's meteorological investigations as testimonial on behalf of WB's application for position of curator at Kew Observatory.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[20 January 1843]
Source of text:
RS:HS 19.101
Summary:

Ask Edward Sabine for authority to insert additional notes [on barometric observations] into report already at printer's. Does not advise publishing observations. Asked Howard Elphinstone to send observations to WB.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[21 July 1843]
Source of text:
RS:HS 19.104
Summary:

Yesterday's letter was mistakenly sent to WB's former address. Sends copy.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[28 July 1843]
Source of text:
RS:HS 19.106 (C: 19.105, 22.166, & 22.167)
Summary:

JH's theory of barometric waves. Comparison with ocean tides. Non-trade winds follow laws of periodicity and are predictable, accounting for previously unexplained phenomena. Attributes rotating storms to interference of two or more wave trains. Will propose WB as director of new B.A.A.S. project to discover laws of weather behavior. Sends payment for WB's expenses. Never saw anything more beautiful than WB's 'Symmetrical Barometric Curve.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[15 September 1843]
Source of text:
RS:HS 19.109
Summary:

B.A.A.S. approved WB's employment by Magnetical and Meteorological Committee to explore atmospheric waves. Will send Russian observations tomorrow. Howard Elphinstone agrees to send his observations [at Ore, near Hastings]. Lists meteorology books.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[3 October 1843]
Source of text:
RS:HS 19.110
Summary:

Sends Howard Elphinstone's barometer observations [at Ore, near Hastings].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[7 October 1847]
Source of text:
RS:HS 19.126 (C: RS:HS 22.328)
Summary:

JH avoids participating in meteorological enquiry. Suggests improvements on WB's plan to establish government office to collect and publish meteorological reports from worldwide network of military stations. Has read Francis Ronalds's papers.

Contributor:
John Herschel Project