By the courtesy of Generals Stone and Purdy I was enabled, after return to Cairo in May, 1878, to inspect the collection. Admirably arranged in order of place, and poor as well disposed, it is, nevertheless, useful to students; and it was most interesting to us. The only novelty is asbestos produced in the schist: the raw material is now imported by the United States, and used for a variety of purposes. It is said to exist in Mount Sinai; we found none in Midian, where the schist formations are of great extent, probably because we did not look for it. The collection was made by Colonel Colston; and Mr. L. H. Mitchell, a mining engineer attached to the Egyptian Staff, spent several weeks spalling sundry tons of quartz. After finding a speck of gold, the work was considered to be done. General Stone, however, sensibly deprecated any attempt to exploit the minerals: the country lacks wood and water, and the expense of camel-transport from Hamámát to Kusayr, and thence in ships to Suez, would swallow up all the profits. That Egypt was immensely rich in old days we know from several sources. Appian tells us that the treasury of Ptolemy Philadelphus contained 740,000 talents; and assuming with Ebers[EN#40] the Egyptian at half the Æginetan, we have the marvellous sum of £83,250,000. According to Diodorus (i. 62), the treasury of Rhampsinit, concerning which Herodotus (ii. 121, 122) heard a funny story from his interpreter, contained 4,000,000 talents, equal to at least £450,000,000. This rich king's treasure-house has been found portrayed in the far-famed Temple of Medinat Habú: the mass of wealth, gold, silver, copper, and spices, is enormous; and, while the baser metals are in bars, the precious are stored in heaps, sacks, and vases. The gold-mines of the old Coptos-plain, the modern Kobt, south of Keneh, are preserved to all time by the earliest known map. It has survived; whilst those of the Milesian Anaximander (B.C. 610- 547), of Hekataeus (ob. B.C. 4 76), also from Miletus and called the "Father of Geography" (Ebers), and of Ptolemy the Pelusian are irretrievably lost. A papyrus in the Turin Museum contains a plan of the mineral region spoken of in two stelœ, those of Radesiyyah and Kuban, describing the supply of drinking-water introduced into the desert between Kuban and the Red Sea. Chabas[EN#41] has published a coloured facsimile of this map: the gold-containing mountains are tinted red, and the words "Tu en nub" (Mons aureus) are written over them in hieratics.