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