Of metals, the number found in the district known to me, is small. But in its neighbourhood, to the South and West, if I have been rightly informed, almost all descriptions are to be met with. The copper brought by the merchants from the territories of certain idolatrous tribes bordering on Fûr, is of the finest quality, in colour resembling that of China, and appears to contain a portion of zink, being of the same pale hue. The large rings into which it is formed (of ten or twelve pounds weight each) are very malleable: of the ore I never was able to procure a specimen. Iron is to be found in abundance, and the Pagan negroes, on whom the Mohammedans look with contempt, are the artists that extract it from the ore; an art of which the former, as far as I have seen, are ignorant. Though their iron, through the stupidity of the inhabitants, never acquire the more useful character of steel, its effects in the form of knives and javelins are yet commensurate with the malign dispositions of mankind. And though soft and perishable, with increased trouble in renewing the edge, the tools formed of it answer all the purposes of their rude workmanship. The method by which I observed a workman supply the defect of a furnace for fusing metals appeared worth noticing. He had a leathern bag, which, on compression, forced the air through a wooden pipe for bellows, and placed over the fire, made in a small hole in the earth, the remains of a water jar, with which simple apparatus the effect was rapid and not inconsiderable. Silver, lead, and tin, I have never heard mentioned here, but as coming from Egypt. Of gold, in the countries to the East and West, the supply is abundant. Little comes to Dar-Fûr, except by accident. What is produced in the West reaches the northern markets by means of other caravans. The monarch occasionally obtains a small quantity for his own use from the East. Alabaster, and various kinds of marble, exist within the limits of Fûr. The rocks chiefly consist of grey granite. But of stone adapted to building, or convertible into lime, either there is none, or the quantity must be extremely small. The granite serves for hand-mills without being cut, for the metal of which their tools are composed is too soft to be employed for that purpose. Fossile salt is common within a certain district: and there is a sufficient supply of nitre, of which however no use is made. A quantity of sulphur is brought by the Arabs, who feed oxen (_Bukkara_) from the South and West. But of the place where it is found I have heard no description. It must also exist on the mountain called Gebel Marra; as it is related there are hot springs there; which animals, particularly birds, are observed not to approach; this, if true, may be the effect of sulphureous vapours. PLANTS.