[54] J. J. Rein, “Japan,” Vol. II. p. 528.
[55] Ant. Misc. 8579.
[56] According to Graham-Otto, “Lehrbuch der Chemie,” Vol. III. p. 849, cuprous oxide is decomposed by dilute acids which contain oxygen; the cupric oxide is dissolved and metallic copper remains.
[57] Buto, Aeg. 11867.
[58] Ant. Fr. 29.
[59] [The extraordinary deformation produced by this type of patina may be judged from the fact that the features in this instance were so obscured that the nature of the specimen was not recognised and it had accordingly been mounted upside down. Transl.]
[60] Ant. Fr. 53.
[61] Ant. Fr. 53.
[62] Bischoff, “Das Kupfer und seine Legirung,” p. 43. Layard, “Discoveries in the ruins of Nineveh and Babylon,” p. 191. Fellenberg, “Mittheilungen d. naturforsch. Ges. in Bern,” 1860, p. 68.
[63] “Christiania Videnskabs-Selskabs Forhandlinger” for 1892, 16, p. 5.