Usage History of 'phlogiston'

The following chart shows how frequently 'phlogiston' appeared in printed materials over time. For example, the word 'phlogiston' occurred 4 times in books in 1678 and 6,296 times in 2008. From 1678 to 2008, the word 'phlogiston' was used a total of 304,721 times in books scanned by Google. See Reference: Google Ngram project.

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