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Webster's Dictionary 1828 - Online Edition

Webster's Dictionary 1828

Americal Dictionary of the English Language

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Potassium

POTAS'SIUM, noun A name given to the metallic basis of vegetable alkali. According to Dr. Davy, 100 parts of potash consist of 86.1 parts of the basis, and 13.9 of oxygen.

Potassium has the most powerful affinity for oxygen of all substances known; it takes it from every other compound, and hence is a most important agent in chimical analysis.