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From whence we may rationally conclude, that this way of making the factitious, is either of the ſame kind, or at leaſt very analogous to that uſed by Nature for the Production of the genuine^[1].

XCVII. The Reddle alſo is of two Kinds, the native, and the factitious^[2].

XCVIII. There is alſo, beſide the native Lapis Armenus, a factitious Kind made in Egypt. There are, indeed,

Aſtringent, as I have found by repeated Trials of that from America, than any of the Earths now in uſe.

↑ The making a Red Ochre from the Yellow by burning is as well known, and as much practiſed among the People who deal in Colours for Painting now, as it was in the Time of this Author. I cannot but obſerve, however, that his calling this a Sinopis, is a Proof of what I have before obſerved, that that Word became a Name for all the Subſtances of the Red Ochre kind. As to what this Author obſerves, of the native Red Ochres owing their Colour to Fire, it is very certain, that moſt of them ſhew no Marks of ever having been acted on by that Element. And we know very well, that the ferrugineous Particles which can make the Matter red in burning, can alſo impart that Colour to it without the Aſſiſtance of Fire. Notwithſtanding which, it muſt be allowed, that there are ſome of theſe red Subſtances; and not only theſe, but ſome other Bodies, particularly ſome of the Hæmatites kind, which ſeem, even in their native Beds, to carry evident Marks of their having been wrought on and changed by Fire; though it is not eaſy to ſay, how or when it ſhould have happened.
↑ The factitious Sinopis juſt mentioned, was no other than a factitious Reddle, properly ſpeaking; and what the Author here mentions, was probably another Kind, made from ſome other Species of Yellow Ochre, and called Reddle, from its being of a pale red, and reſembling that of the common native Red Ochre; juſt as the other was called factious Sinopis, from its being of a deeper Colour, and reſembling the genuine Sinopis of Cappadocia.

[2] The making a Red Ochre from the Yellow by burning is as well known, and as much practiſed among the People who deal in Colours for Painting now, as it was in the Time of this Author. I cannot but obſerve, however, that his calling this a Sinopis, is a Proof of what I have before obſerved, that that Word became a Name for all the Subſtances of the Red Ochre kind. As to what this Author obſerves, of the native Red Ochres owing their Colour to Fire, it is very certain, that moſt of them ſhew no Marks of ever having been acted on by that Element. And we know very well, that the ferrugineous Particles which can make the Matter red in burning, can alſo impart that Colour to it without the Aſſiſtance of Fire. Notwithſtanding which, it muſt be allowed, that there are ſome of theſe red Subſtances; and not only theſe, but ſome other Bodies, particularly ſome of the Hæmatites kind, which ſeem, even in their native Beds, to carry evident Marks of their having been wrought on and changed by Fire; though it is not eaſy to ſay, how or when it ſhould have happened.

[3] The factitious Sinopis juſt mentioned, was no other than a factitious Reddle, properly ſpeaking; and what the Author here mentions, was probably another Kind, made from ſome other Species of Yellow Ochre, and called Reddle, from its being of a pale red, and reſembling that of the common native Red Ochre; juſt as the other was called factious Sinopis, from its being of a deeper Colour, and reſembling the genuine Sinopis of Cappadocia.

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