[82]. Valentini, “Museum Museorum, oder der Vollständige Schau-Bühne,” Franckfurt am Mayn, 1713, Pt. II, p. 41; figured.
[83]. Ulyssis Aldrovandi, “Museum metallicum,” Bononiæ, 1648, p. 527; figured on p. 528.
[84]. Valentini, “Museum Museorum,” p. 42; citing description by Major in his “Tractatus de cancris et lapidibus petrifactis,” p. 64.
[85]. Ibid., p. 42; Pl. IX, fig. 3.
[86]. Ibid., p. 41; figured. From report in Miscellan. Acad. Germ. Cur., Decur. I, Ann. I, Obs. CXIII, p. 232.
[87]. Athanasii Kircheri, “Mundus subterraneus,” Amstelodami, 1665, vol. ii, pp. 42 sqq.
[88]. Op. cit., vol. i, p. 39; Pl. IV, fig. 6.
[89]. Scribner & Co., 1886.
[90]. The Germans called it Aschenzieher.
[91]. Pliny, “Naturalia historia,” Lib. xxxvii, cap. 29. In his recently published “Curious Lore of Precious Stones” the present writer suggested that Pliny’s lychnis might have been a spinel, but while some of these “ardent stones” may have been spinels, those displaying the phenomenon of attraction must have been tourmalines.