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of which contain both ^[1] Gold and Silver, though the Silver alone is viſible; and theſe are very remarkable, both for their Weight and Smell.

LXX. As alſo the native Blue, or ^[2]La-

men I have of it, very prettily and exactly reſembles that Body.

↑ The Gold and Silyer Ores are of ſo many Kinds, and ſuch various Appearances, that it is an almoſt endleſs Scene of Variety that may be found in viſiting the various Mines, or examining the Specimens from them. Gold, Woodward obſerves, is, more or leſs of it, incorporated with almoſt all kinds of terreſtrial Bodies: And Silver I have ſeen in almoſt an infinite variety of Forms. That of Saxony is incorporated generally with Sulphur and Arſenick, and has from them an external Shew of Gold, for which Reaſon it is called there Rotgulden Ertz, that is, Red-golden-looking Ore: This is very heavy, and when broken is of a ſtrong Smell.

Beſide theſe, the common Marchaſites and Pyritæ many of them hold Gold and Silver in ſmall Quantities; and are of various Colours, and contain ſulphureous, arſenical, and other different Matter, enough to give them both Smell and Weight, and ſometimes both, to a very great Degree.
↑ The Κυανὸς or Cyanus here mentioned, is not the blue Gem before deſcribed under that Name, but the blue Colour uſed by Painters, and ſince called Lapis Armenus, by which Name alone it is now known. The Greeks called this and the Gem both by the common Name Κυανὸς Cyanus: They had no other Name for this, but generally took care to diſtinguiſh which they meant, by the Context. It is here evident by its Epithet αὐτοφυης, by way of diſtinion from the artificial Cæruleum uſed in Paintings; (for the Cyanus Gem, or Lapis Lazuli, cannot be ſuppoſed to have been ſo ſubject to be counterfeited) and its containing their Chryſocolla, which the Lapis Armenus always does, that the Paint, and not the Gem, was the Cyanus meant here. The Antients calling thefe two different Subſtances by the ſame Name, has, however, been the Occaſion of innumerable Confuſions and Miſunderſtandings of their Works; and that not only among the leſs careful of the Moderns, but even among ſome of their earlieſt Copiers: And we are not to wonder if many are at preſent miſled,

[2] The Gold and Silyer Ores are of ſo many Kinds, and ſuch various Appearances, that it is an almoſt endleſs Scene of Variety that may be found in viſiting the various Mines, or examining the Specimens from them. Gold, Woodward obſerves, is, more or leſs of it, incorporated with almoſt all kinds of terreſtrial Bodies: And Silver I have ſeen in almoſt an infinite variety of Forms. That of Saxony is incorporated generally with Sulphur and Arſenick, and has from them an external Shew of Gold, for which Reaſon it is called there Rotgulden Ertz, that is, Red-golden-looking Ore: This is very heavy, and when broken is of a ſtrong Smell.

Beſide theſe, the common Marchaſites and Pyritæ many of them hold Gold and Silver in ſmall Quantities; and are of various Colours, and contain ſulphureous, arſenical, and other different Matter, enough to give them both Smell and Weight, and ſometimes both, to a very great Degree.

[p171-3] The Κυανὸς or Cyanus here mentioned, is not the blue Gem before deſcribed under that Name, but the blue Colour uſed by Painters, and ſince called Lapis Armenus, by which Name alone it is now known. The Greeks called this and the Gem both by the common Name Κυανὸς Cyanus: They had no other Name for this, but generally took care to diſtinguiſh which they meant, by the Context. It is here evident by its Epithet αὐτοφυης, by way of diſtinion from the artificial Cæruleum uſed in Paintings; (for the Cyanus Gem, or Lapis Lazuli, cannot be ſuppoſed to have been ſo ſubject to be counterfeited) and its containing their Chryſocolla, which the Lapis Armenus always does, that the Paint, and not the Gem, was the Cyanus meant here. The Antients calling thefe two different Subſtances by the ſame Name, has, however, been the Occaſion of innumerable Confuſions and Miſunderſtandings of their Works; and that not only among the leſs careful of the Moderns, but even among ſome of their earlieſt Copiers: And we are not to wonder if many are at preſent miſled,

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