[20] "Om Konserviring af Jordfundne Jernsager," in "Aarsberetning fra Foreningen till norske Fortidsmindesmaerkers Bevaring," 1892, p. 52.
[21] Krause, "Verhandl. d. Berl. anthropol. Ges.," 1882, p. 533.
[23] "Sitzungsberichte der Alterthumsgesellschaft Prussia," 1881-2, p. 9.
[24] Merkbuch, Alterthümer aufzugraben und aufzubewahren, 2nd edition, p. 71.
[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.
[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.
[35] Von Bibra, "Die Bronzen und Kupferlegirungen," p. 206 _et seq._
[36] See the very full quotation from Wibel's work given above.
[37] I have not been able to find anything on this point in the literature of the subject.
[39] Cf. "Comptes rendus," 1856, XLIII. p. 735.
[40] "Journal f. praktische Chemie," XCIV. 1865, p. 314.
[41] "Verhandl. d. Ver. z. Beförd. d. Gewerbf.," 1869, p. 182.
[42] Dingler, "Polyt. Journal," 1878, Vol. CCIV. p. 483.
[43] "Berg- u. Hüttenmännische Zeitung," Vol. XXXVII. 1878, p. 329.
[44] Dingler, "Polyt. Journal," 1879, Vol. CCXXXII. p. 333.
[45] [Several other analyses of bronzes from various sources have been recently published. Thus Natterer ("Monatshefte für Chemie," XXI. 256, 1900; also "Chem. Centralblatt," 1900, I. 1262) examined a corroded bronze statuette from Ephesus. The bronze contained:--Tin 6·09%, lead 4·87%, and copper 89·64%, with traces of zinc.
Bassett ("Proc. Chem. Soc.," 1903, XIX. 95) gives an analysis of the base of an Egyptian statuette, found in the Nile Delta, probably dating from 200-100 B.C. The base was hollow but filled with lead, and was covered with a thick green coating, which in parts entirely replaced the original metal.
Cu 50·65% Pb 6·74% Sn 2·94% Fe 0·15% Ni, Mn, etc. 0·11% Cl 15·71% SiO_{ 2} (as sand) 1·14% H_{ 2}O 11·07% (NH_{ 4}) 0·11% ------- 88·62%