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[223]. Memoirs of the Geological Survey of India, vol. x, pp. 255–259.
[224]. Theophrastus’s “History of Stones,” with an English version by John Hill, London, 1746, p. 73.
[225]. Martius, “Unterricht von der Magiæ Naturali,” Leipzig, 1717, p. 290.
[226]. From a fourteenth century Italian MS. translation of the treatise in the author’s library; see fol. 8, recto, col. 2; fol. 9, recto, col. 1; fol. 10, recto, col. 2; fol. 14, verso, col. 1; fol. 17, verso, col. 1; fol. 25, verso, col. 1; fol. 26, verso, col. 1; fol. 26, verso, col. 2; fol. 29, verso, col. 2.
[227]. Regimen sanitatis Salernitanum, ed. Sir Alexander Cooke, Oxford, 1830, p. 125. This edition contains reproductions of many curious woodcuts from the old German editions of Curio, published in 1559, 1568 and 1573.
[228]. Havard, “Histoire de l’orfévrerie,” Paris, 1896, p. 359; Olivier de la Haye, “Poème sur la grande peste de 1348,” verses 3162 sqq.
[229]. Francisci Indiæ, “Hygiphylus sive de febre maligna dialogus,” Veronæ, 1593, pp. 125, 126.
[230]. Dr. B. Jézak, “Aus dem Reiche der Edlesteine,” Prag, 1914, p. 65.
[231]. Kobert, “Ein Edlestein der Vorzeit,” Stuttgart, 1910, p. 36.