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Flame » in reply to re: try "On the Influence of Carbonic Acid in the Air Upon the Temperature of the Ground", Philosophical Magazine 1896(41): 237-76)

re: try "On the Influence of Carbonic Acid in the Air Upon the Temperature of the Ground", Philosophical Magazine 1896(41): 237-76)

Also the year was 1896.

Question, at what time in human history was CO2 levels in the atmosphere accurately measured.
When and what level was it noted to be?

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