LSE4329713 Mexican arastras (area trampled by the feet of the mules, as for the treading of the bles) for the grinding and amalgamation of silver ores (Gould and Curry factories) in the vicinity of Virginia City (Nevada), engraving after J.Ferat\'s drawing, illustrating the journey from Washington to San Francisco in 1868, by L. Simonin, published in ??????of world??????1874, edited by Edouard Charton, Hachette edition, Paris. Selva Collection. by Ferat, Jules (b.1819) (after); Private Collection; (add.info.: Mexican arastras (area trampled by the feet of the mules, as for the treading of the bles) for the grinding and amalgamation of silver ores (Gould and Curry factories) in the vicinity of Virginia City (Nevada), engraving after J.Ferat\'s drawing, illustrating the journey from Washington to San Francisco in 1868, by L. Simonin, published in ??????of world??????1874, edited by Edouard Charton, Hachette edition, Paris. Selva Collection.); Photo by Leonard de Selva.