Search: Herschel, John in correspondent 
[Birt, William Radcliffe] in correspondent 
1840-1849::1841 in date 
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Herschel8370

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[1841-1?]
Source of text:
RS:HS 19.169
Summary:

[WB's] sheets [of barometer observations] are well done. Sends European latitudes and longitudes. Will send 'Engraved Squares' soon. Notes errors in observations.

Contributor:
John Herschel Project

Herschel8367

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[1841-2?]
Source of text:
RS:HS 19.166
Summary:

Explains 'discordances' as contraction of damp paper. Use 'Engraved Squares' to avoid this error. Possible error in barometer observations from Montreal. Diurnal 'undulation' appearing in data. American observations arrived, may fill 'missing intervals.' Keep record of expenses incurred. Postscript on color variation in stars.

Contributor:
John Herschel Project

Herschel8368

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[1841-3?]
Source of text:
RS:HS 19.167
Summary:

Received WB's packet. Will send sheets tomorrow. Needs all 'Curves and data' before end of March for final report to B.A.A.S. JH's nerves 'shattered with night work.'

Contributor:
John Herschel Project
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