The philosophical works of the Honourable Robert Boyle esq.: abridged, methodized, and disposed under the general heads of physics, statics, pneumatics, natural history, chymistry, and medicine (1725)
Boyle, Robert, 1627-1691, Shaw, Peter, 1694-1763. ed · London, W. and J. Innys [etc.] · leaf 121
ner* as pounded ore, with confiderable profit. I have alfo fome fine goldthat never endured the fire, taken out of tin-ore. But whether it bethe conta£l or operation of the air, or fome internal difpofition ana-iagous to a metalline feed or ferment, that caufes this increafe in inetalsI dare not be… … THE 99 THE ORIGIN and VIRTUES O F GEMS. S E C T. L IN propofing my conjeftures about the virtues of gems, I iKall notfuppoie the truth of thofe wonderful properties that fome haveafcribed to them ^ tho not only writers of natural magic, butgrave authors, have appeared in their favour. For my part,…
Physics · Chemistry · Medicine
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