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Issue: 154, 09/10/30 p. 637
Heading: Rome, Para 3
Category: Chemistry   Mineralogy   Geology   Economic Geology   
Topic: Sig. Rolli, an intelligent naturalist, discovered, a few months ago, a stone weighing 755 Roman pounds, which was supposed to be that precious silicious material which the ancients called Murrha...[The stone attracted "learned discussions" and the attention of naturalists, until somebody managed to identify it as fluor-spar]
Person: ROLLI, Sig.   
Signed: "D."; Ed`s Mark: SMITH

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