The nature of the precious liquid from which purple came would not be entirely understood for another two millennia. In 1826, a twenty-three-year-old student at the Ecole de Pharmacie, Antoine Jérôme Balard, after studying the composition of salt marshes, concluded that the blackish-purplish, foul-smelling liquid present in marsh water, the residue water from which salt crystals had formed, was a previously unidentified chemical element. Because the liquid was identical to the purple secretion of the murex, he named the new element muride. The Académie Française, wary of having major discoveries come from students, thought at the least it should not let him give the name. So they changed muride to bromine, a word meaning "stench.
( Mark Kurlansky )
[ Salt: A World History ]
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