Before it was learned that matter burns by taking up oxygen, most chemists sought to explain combustion as the release of a mysterious substance, which they named "phlogiston". Phlogiston theory was a ...

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TN the middle of the seventeenth century, the phlogiston theory was generally accepted. Scientific study of the atmosphere only began in the last quarter of that century, and within fifty years of ...

THE October number of the Annals of Science, a quarterly journal dealing with the history of science, published by Messrs. Taylor and Francis, contains some papers of unusual interest. Prof. J. R.