from sixty to seventy-five per cent, of pure metal. Silver is also abundant in the mountains; but the mines have been carelessly worked, and, in some places, are abandoned for want of suitable machinery or enterprize. The principal districts and places in which this precious deposit has been found and profitably wrought, are at Gavalines, Guarisamey and San Dimas, in the two last of which the fortunate adventurer Zambrano, acquired, during twenty-five years, the extraordinary wealth he possessed. These mines are divided into Tamasula, Canélas and Sianori, lying on the western slope of the Cordillera; and Guanasevi, Indée, El Oro, Cuencame and Mapimi, on the eastern declivities. They lie about five days' journey west of the capital.
The following interesting sketch of Indian necrology is given in the valuable and recent work of Mühlenpfordt upon the Mexican Republic.
In the State of Durango,—says this interesting German author,—especially in the unexplored portion of the Bolson de Mapimi, many relics of antiquity, important for the history of this country, are probably hidden. In the summer of 1838, a remarkable old Indian cave of sepulture was discovered in this singular region. Among the few establishments which enterprizing settlers have founded in that lonely territory which is overrun by wild Indians, one of the most important is the estate of San Juan de Casta, on its western border, 86 leagues north of the town of Durango. Don Juan Flores, its proprietor, rambling one day with several companions in the eastern part of the Bolson, remarked the entrance of a cavern on the side of a mountain. He went in, and beheld, as he imagined, a great number of Indians sitting silently around the walls of the cave. Flores immediately rushed forth in fright, to communicate his remarkable discovery to his friends, who at once supposed that the story of the adventurer was nothing but an affair of fancy, as they no where found any trace or foot path to show that the secluded spot had been hitherto visited. But, in order to satisfy themselves, they entered the cavern with pine torches,—and their sight was greeted by more than a thousand corpses in a state of perfect preservation, their hands clasped beneath their knees, and sitting on the ground. They were clad in mantles excellently woven and wrought of the fibres of a bastard aloe, indigenous in these regions, which is called lechuguilla, with bands and scarfs of variegated stuffs. Their ornaments were strings of fruit-kernels, with beads formed of bone, ear-rings, and thin cylindrical bones polished and gilt, and their sandals were made of a species of liana.
