A constant and often profitable business in the 'silver trade' is carried on at these mines. As the miners rarely fail being in need of ready money, they are generally obliged to sell their bullion for coin, and that often at a great sacrifice, so as to procure available means to prosecute their mining operations. To profit by this trade, as is already mentioned, was a principal object of my present visit. Having concluded my business transactions, and partially gratified my curiosity, I returned to Chihuahua, where I arrived, November 24, 1835, without being molested either by robbers or Indians, though the route is sometimes infested by both...