General Repertory of Mineralogical, Mining, and Salt Works Literature

3. Chr. Frider. (or Gabr.) Fischer, The pair of stones Aetites and Bufonites Toad-stone. Königsberg. 1715. 4to.

§. 5.

1. Car. Nic. Lang, Appendix to the history of figured stones of Switzerland, on a certain wonderful Agate which represents in its colors the image of Christ dying on the cross. Lucerne. 1735. 4to. 1 1/2 sheets, with 1 copperplate.
See also Mineralogy. Part I. §. 160. No. 7. b).

2. Memoirs on the variations of an Agate from the cabinet of Duke Charles of Lorraine, by Mr. Thom. Mangeart. Brussels. 1752. Folio.

3. On the rainbow-agate, which Mr. Schulze made known to the Paris Academy in 1777. Hamburg. 1780. 4to. 3 sheets and 1 illuminated copperplate. (B. 253.)
General German Library XLIX. p. 412.

§. 6.

See Mineralogy. Part I. §. 75. No. 1. 2.

§. 7.

1. Ant. Sneberger, Gem Amethyst or Aethiopic Carbuncle. Krakow. 1565. 8vo.
——— Frankfurt. 1581. 8vo.

§. 7. b.

See Mineralogy. Part II. §. 168. No. 34.

*) See also Mineralogy. Part I. §. 40. No. 1. Part II. §. 16. No. 4.