[1619] The form of copper which was termed “coronarium” has been already described in Chapter [22].—B.
[1620] “Atramento sutorio.” “Shoemakers’ black.” See Chapters [27] and [32] of this Book.
[1621] Until it assumes an ashy colour, Dioscorides says.—B.
[1622] See B. xii. cc. 30, 32.
[1623] According to Celsus, this substance obtained its name from the person who invented or compounded it; he calls it “Collyrium of Hierax.”—B.
[1624] “Atramenti sutorii, quod chalcanthum vocant.” We may presume that this substance was somewhat different from the “atramentum sutorium” mentioned in the last Chapter: the word “chalcanthum” means “flower of copper;” χαλκοῦ ἄνθος.—B. Delafosse identities it with blue vitriol, sulphate, or hydro-trisulphate of copper. See Chapter [32].
[1626] From the Greek σκωλὴξ, “a worm,” “Vermicular Verdigris.”—“The accounts of this substance in ancient authors seem to some commentators to be obscure; but in my opinion we are to understand by them that the ingredients were pounded together till the paste they formed assumed the appearance of pieces or threads like worms. For the same reason the Italians give the name of vermicelli to wire-drawn paste of flour used in cookery.”—Beckmann, Hist. Inv. Vol. I. p. 173, Bohn’s Edition.
[1627] In B. xxxiii. c. [29].—B.
[1628] The name, no doubt, of a copper ore which has not been identified. Delafosse suggests that it may have been an ore of iron and copper pyrites in combination with a silky copper malachite. See Chapter [2] of this Book, and B. xxxv. c. [52].