Alumen sentence example

alumen
  • The word alumen, which we translate alum, occurs in Pliny's Natural History.
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  • Pliny informs us that alumen was found naturally in the earth.
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  • Different substances were distinguished by the name of "alumen"; but they were all characterized by a certain degree of astringency, and were all employed in dyeing and medicine, the light-coloured alumen being useful in brilliant dyes, the dark-coloured only in dyeing black or very dark colours.
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  • Several other species of alumen are described by Pliny, but we are unable to make out to what minerals he alludes.
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  • The alumen of the ancients, then, was not the same with the alum of the moderns.
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