2545.1 Eresius THEOPHRASTUS. ... History of stones. With an English version, and critical and philosophical notes... By John Hill. To which are added, two letters: one... on the colours of the sapphire and turquoise. And the other... upon the effects of different menstruums on copper. Both tending to illustrate the doctrine of the gems being coloured by metalline particles. 8° London: for C. Davis 1746 Ferguson Wisconsin