Portal logo
INTRODUCTION.
11
AEsopus " reader to King Mithridates," who, to judge from the citation "on the Pan-fish," followed in the same line of the marvellous.
The ' Poetical Description of the Inhabited World,' com­posed by Dionysius, hence entitled " Periegetes," a native of Charax, in Susiana, contains many important notices of the different Eastern localities producing the several pre­cious stones ; which will be found called into use, under their respective heads, in the course of this ' History.' The epoch of the author is a matter of conjecture, but is usually placed at b.c. 30. As, however, in one passage he alludes to the " Persian conquests " of his patron, he must cer­tainly have flourished long prior to this date, and probably under one of the early and enterprising Seleucidae.
Of ancient Greek Mineralogy this is absolutely all that remains. Of Roman, besides Pliny's inestimable though much too compressed compendium, somewhat more is extant, although it is of but trifling importance. Solinus, who seems, from certain incidental notices * in his descrip­tions of places, to have belonged to the weakly Eevival of literature in the age of Constantine, has in his 'Poly­histor ' particularly discussed the article of the precious stones furnished by the several regions he is passing in review. His notices are often extremely useful, inasmuch as he evidently aims at a more precise and technical de­scription of the various kinds than that to be obtained from his precursor, Pliny ; and indeed he displays in his defi­nitions the knowledge of the practical jeweller. For example, it is impossible to derive a clear notion of what stones the Romans understood by certain denominations (notably the "Hyacinthus" and the "Sardonyx") from Pliny's vague description of them, but for the aid of the