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Lord Kelvin[edit]

Hello. I will have a look at Age of Earth and elsewhere, and sort it out. -- Crowsnest (talk) 18:42, 12 March 2009 (UTC)
See the ref I added to the article: Burchfield, Joe D. (1990), Lord Kelvin and the Age of the Earth, Chicago: University of Chicago Press, p. 43, ISBN 978-0-226-08043-7 . In 1862 he estimated the maximum age at 400 million year; in 1897 his ultimate estimate was 20-40 million year. My sincere apologies for marking your edit as vandalism. -- Crowsnest (talk) 22:38, 12 March 2009 (UTC)