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 401
uppofe anounce. By the fame method may be examined the different alloys of pure filver,with copper, or other metal, fpecifically lighter than filver ; and, with aflight variation, twill not be difficult to eftimate in what degree, feveralcoins, whether filver, or gold, are debafed, by the known… … &
Physics · Chemistry · Medicine
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