[92]. A. C. Hamlin.
[93]. Theophrasti, “De lapidibus, peri tôn lithôn,” ed. by John Hill, London, 1746, pp. 71–73 (cap. xlvi).
[94]. Idem, pp. 68–71 (cap. xlvi); see also Hill’s note on p. 69.
[95]. Johannis de Laet, Antwerpii, “De gemmis et lapidibus, libri duo,” Lugduni Batavorum [1647], pp. 36, 40.
[96]. “Curiose Speculationes bey schlaflosen Nächten ... von einem Liebhaber der Immer Gern Speculirt,” Chemnitz und Leipzig, bey Conr. Stosseln, 1707, 857, pp. 80.
[97]. Johann Gustav Donndorf, “Natur und Kunst,” Leipzig, 1790, p. 516.
[98]. “Histoire de l’Académie Royale des Sciences et Belles Lettres,” vol. xii, 1756; Berlin, 1758, pp. 105–121.
[99]. See Historie de l’Académie Royale des Sciences Année mdcccxvii Paris, 1719, pp. 7, 8.
[100]. Abbé Haüy, “Trattato dei caratteri fisici delle pietre preziose,” Ital. trans. by Luigi Configliachi, Milano, 1819, pp. 135–138; see Plate II, fig. 49.
[101]. Aepinus, l. c.