[25] [This fact was noticed by Sir Thomas Browne, 1658, cp. “Hydriotaphia,” cap. iii. Transl.]
[26] In this work the Patina on antiquities only is considered; with that on modern bronzes we are not concerned.
[27] “Mittheilungen d. naturforsch. Gesell. in Bern,” 1865, p. 12.
[28] “Mitth. d. naturforsch. Gesellschaft in Bern,” 1860, p. 69.
[29] “Jahrbuch für Mineralogie,” 1860, p. 813.
[30] Malachite, CuCO3, Cu(OH)2.
[31] Azurite, 2CuCO3, Cu(OH)2.
[32] “Jahrbuch für Mineralogie,” 1865, p. 400.
[33] The extract which here follows is in part verbatim.
[34] “Annalen der Chemie u. Pharmacie,” 1853, Vol. LXXXV. p. 253.