[21] Simmond's Colonial Magazine. Vol. V. p. 87. [22] There is evidently some mistake in these dimensions, which would give a mass of masonry many times larger than the great pyramid at Ghizeh. [23] London Athenæum, Nov. 9. 1846. [24] Journal of the Geographical Society. Vol. 16. [25] Missionary Herald, vol. 41. p. 218. [26] London Athenæum, March 7, 1846. [27] Ibid. Oct. 31, 1846. [28] Bulletin de la Société de Géographie. Rapport par M. Roger. 1846. p. 321. [29] London Athenæum, July 4, 1846. [30] London Athenæum, July, 1845. [31] The Geography of N'Yassi, or the Great Lake of Southern Africa, investigated, with an account of the overland route from the Quanza, in Angola, to the Zambezi, in the government of Mozambique, by Wm. Desbrough Cooley, in the Journal of the Royal Geographical Society, London. Vol. xv. [32] Notes on African Geography, by James M'Queen.--_Ibid._ Contributions towards the Geography of Africa, by James McQueen, in Simmond's Colonial Magazine, Vol. vi. [33] Journal of the Royal Geographical Society, Vol. 15, p. 371. [34] Nouvelles Annales des Voyages: May, 1846, p. 139. [35] Bulletin de la Société de Géographie de France, for 1845, p. 251. [36] Notice sur le Progrès des découvertes Géographiques pendant l'année, 1845, par V. de St. Martin. Bulletin de la Société de Géographie, p. 245. [37] Nouvelles Annales des Voyages. Notes Ethnologiques, sur la race blanche des Aures. Par M. Guyon. Janvier, 1846, p. 116. [38] Comptes-Rendus de l'Académie des Sciences, 29 Dec. 1845. [39] Revue Archæologique, Nov. 1845. [40] The incident which led to the discovery of this alphabet is deserving of notice. An Algerine named Sidy-Hamdan-Ben-Otsman-Khodja, who had gained the confidence of the Duke of Rovigo, then Governor of Algiers, was in correspondence with the Bey of Constantine. The Hadji Ahmed, to render this correspondence more sure, wrote his letters in conventional signs, known among certain Arabs by the name of _romouz_.