[1615] “Seplasiæ.” The druggists dwelling in the Seplasia. See B.
xxxiii. c. 58.
[1616] In Chapters 22 and 23, as applied to Cadmia and Cyprian copper,
respectively.—B.
[1617] “Ærugo.” The researches of modern chemists have ascertained the
composition of verdigris to be a diacetete of copper; the sesquibasic
acetate and the triacetate are also to be considered as varieties
of this substance; we have an exact analysis of these salts in the
“Elements” of the late Dr. Turner, the Sixth Edition, edited by
Professor Liebig and Mr. W. Turner, pp. 931, 2. Most of the processes
described in this Chapter are mentioned by Dioscorides.—B. See also
Beckmann, Hist. Inv. Vol. I. p. 171, _et seq._, _Bohn’s Edition_.
[1618] According to Brotero, this is the process generally adopted in
France, in preference to the employment of vinegar in a pure state.—B.
[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