Theophrastou tou Eresiou peri ton lithon biblion. Theophrastus's history of stones. With an English version, and critical and philosophical notes, including the modern history of the gems, &c. described by that author, and of many other of the native fossils. By John Hill. To which are added, two letters: one to Dr. James Parsons, F. R. S. on the colours of the sapphire and turquoise. And the other, to Martin Folkes, Esq; Doctor of Laws, and President of the Royal Society; upon the effects of different menstruums on copper. Both tending to illustrate the doctrine of the gems being coloured by metalline particles.

Date:

MDCCXLVI. [1746]