Footnote 156: Lenormant, “Lettres Assyriologiques,” Paris, 1872, vol. ii, p. 123. Footnote 157: “Voyages d’Ibn Batoutah.” Translation by C. Defremery and B. R. Sanguinette, vol. i, 3d Ed., Paris, 1893, p. 314. Footnote 158: Sale, “The Koran” (Preliminary Discourse), Phila., 1853, p. 14. Footnote 159: Burckhardt, “Travels in Arabia,” London, 1829, p. 137. Footnote 160: Burckhardt, “Travels in Arabia,” London, 1829, p. 167. Footnote 161: Chardin, “Voyage en Perse,” Amsterdam, 1735, vol. iv, p. 171. Footnote 162: Giovanni B. Rampolli, “Annali Musulmani,” vol. viii, Milano, 1824, p. 589, note 104. Footnote 163: Dr. C. Snouck-Hurgronje, “Mekka,” Haag, 1888, vol. i, pp. 2, 4, 5. Footnote 164: Op. cit., p. 11. Footnote 165: From Hammer-Purgstall’s “Fundgrube des Orients,” vol. iv, Heft 3; cited by E. F. F. Chladni, “Neues Verzeichniss der herabgefallenen Stein- und Eisenmassen,” p. 55; Gilbert’s Annalen der Physik, vol. 1. Footnote 166: E. F. F. Chladni, “Neues Verzeichniss der herabgefallenen Stein- und Eisenmassen,” p. 58; Gilbert’s Annalen der Physik, vol. 1. Footnote 167: Ibid., p. 5. Footnote 168: Berthelot, “Histoire des Sciences: La Chimie au Moyen-âge,” Paris, 1893, vol. iii, p. 225. Footnote 169: Brezina, “The Arrangement of Collections of Meteorites”; Proceedings of the American Philosophical Society, vol. xliii, Jan.-Dec., pp. 212, 213. Footnote 170: King, “Remarks Concerning Stones said to have Fallen from the Clouds,” London, 1796, p. 4. Footnote 171: Megenberg, “Buch der Natur,” ed. Pfeiffer, Stuttgart, 1861, p. 92. (This is based on Thomas de Cantimpré’s “Liber de natura rerum,” written about 1240.) Footnote 172: E. F. F. Chladni, “Neues Verzeichniss der herabgefallenen Stein- und Eisenmassen,” p. 17; Gilbert’s Annalen der Physik, vol. 1. (From copy having MS. notes and emendations by the author.) Footnote 173: Metallotheca Vaticana, Romæ, 1719, p. 248. Footnote 174: Ulyssis Aldrovandi, “Museum Metallicum,” pp. 528, 529. Footnote 175: Fundgruben des Orients, vol. iv, p. 282; Wien, 1814. Footnote 176: King, “Remarks Concerning Stones said to have Fallen from the Clouds,” London, 1796, p. 26. Footnote 177: Lieut. Robert E. Peary, “Northward over the ‘Great Ice,’” New York, 1897, vol. ii, pp. 553 sqq. Footnote 178: Edmund Otis Hovey, “The Foyer Collection of Meteorites,” American Museum of Natural History, Guide Leaflet No. 26, December, 1907, pp. 23–27. Footnote 179: Henry A. Ward, “Willamette Meteorite”; Proc. Rochester Acad. of Sc., vol. iv, pp. 137–148, plates 13–18. Footnote 180: Edmund Otis Hovey, “The Foyer Collection of Meteorites,” American Museum of Natural History, Guide Leaflet No. 26, December, 1907, pp. 27, 28. Footnote 181: