[582] Jacobi Wolfii, “Curiosus amuletorum scrutator,” Francofurti & Lipsiæ, 1692, p. 460.
[583] Ibid., p. 570.
[584] Blumentritt, “Das Stromgebiet des Rio Grande de Mindañao,” in Petermann’s Geographische Mitteilungen, vol. xxxvii, p. 111, 1891.
[585] Blackwood’s Magazine for February, 1886, p. 238.
[586] Jacobi Wolfii, “Curiosus amuletorum scrutator,” Francofurti et Lipsiæ, 1692, pp. 390, 392.
[587] Ibid., p. 32; Sec. I, cap. ii.
[588] “Illustrated Catalogue of Mr. A. W. Drake’s famous collections,” New York, 1913, Pt. I, Nos. 1757, 1758, 1759, 1760.
[589] Communicated by L. Weininger, of Vienna.
[590] Patent application filed April 3, 1912, by Monroe Engelsman, and serial number 688,244.
[591] George Frederick Kunz, “The Etiquette of Gems,” the Saturday Evening Post, June 27, 1908, p. 29.