JACOB, i. p. 56. In copying the above extract from Diodorus, we inserted the word _quartz_ in brackets after his word “marble,” under the impression that the old Egyptian mines were, like the similar ones in California, really situated in veins of quartz, and not of marble. We have since communicated with a gentleman who, about twenty years ago, accompanied M. Linant, a French engineer in the service of Mehemet Ali, to examine these mines, and he informs us that the gold was really found in _quartz veins_ traversing a black slaty rock. The locality, as may be seen in Sharpe’s _Chronology and Geography of Ancient Egypt_, plate 10, is in the Eastern Desert, about the middle of the great bend of the Nile, and about the 21st parallel. The samples of rock brought down by M. Linant were considered rich enough to justify the despatch of a body of miners, who were subsequently attacked by the natives, and forced to abandon the place. A strong government would overcome this difficulty; and modern modes of crushing and extraction might possibly render the mines more productive than ever. A very interesting account of these mines is to be found in a work by Quatremere de Quincy—“_Notice des Pays voisins de l’Egypte_.” Footnote 19: _Ibid._ p. 247. Footnote 20: FOURNET, _Etudes sur les Depôts Metallifers_, p. 167. Footnote 21: The reader will be interested by satisfying himself of this fact, so peculiar to Victoria, and so favourable to it as a place of settlement. He will find it pictured before his eye in the newly-published small and cheap, but beautifully executed, _School Physical Atlas_ of Mr Keith Johnston. Footnote 22: JACOB, i. p. 55. Footnote 23: _Ibid._ ii. p. 267. Footnote 24: FOURNET, p. 169. Footnote 25: Cortes invaded Mexico in 1519; Pizarro landed in Peru in 1527; and Potosi was discovered in 1545. Footnote 26: ROSE, _Reise nach dem Ural_, i. 555–7. Footnote 27: To some of our readers this remark may call to mind the beautiful process of Mr Lee Pattinson, of Newcastle, for refining lead, by which so much more silver is now extracted from all our lead ores, and brought to market. Footnote 28: _Commercial Dictionary_, edit. 1847, p. 1056. Footnote 29: Quoted in JOHNSTON’S _Notes on North America_, vol. ii. pp. 216, 217. Footnote 30: _The Life and Letters of Barthold George Niebuhr, with Essays on his Character and Influence._ By the Chevalier BUNSEN and Professors BRANDIS and LOEBALL. In 2 vols. Footnote 31: