[302]. De Boot, “Gemmarum et lapidum historia,” Lug. Bat., 1636, p. 264, lib. ii, cap. 113.
[303]. Ibid., loc. cit.
[304]. Höfler, “Volksmedizin und Aberglaube,” München, 1893, pp. 38, 39.
[305]. Konrad von Megenberg “Das Buch der Natur,” ed. by Dr. Franz Pfeiffer, Stuttgart, 1861, p. 452.
[306]. Dugdale, “Monasticon Anglicanum,” London, 1819, vol. ii, pp. 184, 185; also extract from Cotton MS., Nero D vii, on p. 217.
[307]. De vit. abbot.
[308]. Thomas Wright, “On Antiquarian Researches in the Middle Ages,” in Archæologia, vol. xxx, London, 1844, pp. 444–446; cut on page 444.
[309]. Collin de Plancy, “Dictionnaire Infernal,” Bruxelles, 1845, p. 415.
[310]. Plinii, “Naturalis historia,” lib. xxxvii, cap. 10.
[311]. Andreæ Bacii, “De gemmis et lapidibus pretiosis” (Latin translation by Wolfgang Gabelchover of Italian original), Francofurti, 1603, p. 103.