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Gunpowder was known to Roger Bacon and Albertus Magnus about 1250, but... I conclude that both obtained a knowledge of it from Arabic sources.

— J. R. Partington A History of Greek Fire and Gunpowder (1960)

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More quotes by J. R. Partington

The history of gunpowder is associated with that of saltpetre, no comprehensive account of which was available.

A History of Greek Fire and Gunpowder (1960)

The Atomic Theory and the Periodic Law have been given prominence, since their neglect unfailingly leads to obscurity and triviality.

A Text-Book of Inorganic Chemistry (1921)

Very few experiments can, in the nature of things, be really crucial.

Higher Mathematics for Chemical Students (1911)

The extension of Black's method by the physicist Lavoisier led to the downfall of the purely qualitative theory of phlogiston, and gave to chemistry the true methods of investigation, and its first great quantitative law—the law of conservation of matter.

Higher Mathematics for Chemical Students (1911)

Disagreement between theory and experiment has proved a most potent agent in broadening theoretical views, and in making clear the necessity for new concepts or hypotheses.

Higher Mathematics for Chemical Students (1911)

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