( ix ) LIST \ OF WORKS Quoted in this Treatise, and of the Abbreviated Titles employed. Names of Authors. Titles of the Works. Abbreviated titles. Theophras tus. ili^t xib-ar, History of Stones, with an English version, and notes, including the modern history of the gems described by that author, liy Sir John Hill. Lon don, 1774. Theophras tus. P'inius. t. Plinii sec. Historias Naturalis libri xxxvii.; quo* in- tdrprctutione ct notis iliustravit .1. Harduinus, Paris 1732, t. iii. tol. C. Plinii sec. Hist. Nat. libii xxxvii. ex recenssione J. Harduini, Studius Socict, Binont. 1783, 1781.. Basil, lolG, fob Plin. Agricola. 11. Agricola dc Re Metallica 1. xii. ct dc uatura Fossilium, 1. x. Ac. Basil, 151(1, f 0 l. Agricola. Bacci. He Geinmis et Lapidibus prctiosis, 1611. Boctius de Hoot. Boyle. Ceinmarum ct I.apidum Iljstoria, 1617. An Essay about the original Virtues of Gems, wherein are proposed and historically illustrated some conjec tures about the consistence of the matter of precious stones, and the subjects wherein their chiefost virtues reside. By the Honourable Robert Boyle, Esq. Fellow of the Royal Society, London, 1672. b S