Silver mines exist, or have existed, at Benasque, Calzena, and Bielza, in Aragon; at Cuevas, near Almeria; at Almodovar del Campo; at Zalamea, in Extremadura; at Puerto Blanco, in Seville province; in the Sierra de Guadalupe; at Fuente de la Mina, near Constantina; and near Almazarron, in the province of Carthagena. Not far from this latter city was another mine, that sent to Rome a daily yield of five-and-twenty thousand drachmas, and was worked by forty thousand men. Twenty thousand pounds in weight of pure silver proceeded yearly from Asturias, Lusitania, and Galicia. Hannibal extracted from a Pyrenean mine three hundred pounds a day. The fair Himilca, wife of Hasdrubal, was owner of a silver mine at two leagues' distance from Linares. Laborde wrote of this mine: "It was reopened in the seventeenth century, when a vein five feet in breadth was found, from which many pieces of silver were taken; the working of it, however, has been neglected. It belongs to the town of Baeza." The same author, who wrote about one hundred years ago, gives curious and instructive notices of several other Spanish silver mines. "The mountains of the kingdom of Seville, on the confines of Extremadura, towards Guadalcanal, Alanis, Puerto Blanco, and Cazalla, which form a part of the extremity of the chain of Sierra Morena, contain several silver mines, which have been worked. There is one of these in the Sierra Morena, three miles from Guadalcanal, which to all appearance must have been very rich: there were three shafts for descending, the mouths of which are still to be seen: it was worked in the seventeenth century, and given up in 1653. It is believed that it was inundated by the workmen, in revenge for a new tax that was laid upon them. Another silver mine was also worked formerly, a league and a half from the other; it has a shaft, and a gallery of ancient construction; the vein is six feet in circumference, and is composed of spar and quartz. There is also a third mine, a league and a half from Guadalcanal, and half a league south-east of the village of Alanis, in the middle of a field; it is two feet wide; the Romans constructed a gallery in it, from south to north; a branch of it running eastward has been worked since their time: it originally contained pyrites and quartz, but it is by no means rich; there is lead at the bottom." Gold mines, or traces of them, have been found in the neighbourhood of Molina in Aragon, San Ildefonso in Old Castile, and Alocer in Extremadura; in the Sierra de Leyta; in the valley of Hecho in Aragon; and at Paradeseca and Ponferrada--this latter town the _Interamnium Flavium_ of the Romans.