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The gold also found in auriferous lodes is never pure, but forms varies alloys of gold, silver, copper, lead, iron, and bismuth; and no way is known of producing these alloys except by fusion.
There are a few metals, including gold, silver, copper and tin, which, with quicksilver, form a peculiar chemical union called amalgamation, a process of great importance to the gold miner. When a piece of gold or silver is placed in mercury, the latter metal gradually penetrates through it, destroys the coherence of its particles, and form with it a mass like dough.
Frank's slowly comprehending eyes were riveted on the burnished copper railing, on which, only a moment before, her careless fingers had rested. There was no sign, no alteration in the shining surface of that polished metal. But she knew that a change, terrible and malignant, had taken place. It was no longer a mild and innocent guard-rail.
"I would like to keep this ring," she said slowly, pointing to a slender circlet of gold set with a solitaire diamond, "if you think there is any chance of us getting clear." "Everything goes that has any copper in it," he said coldly, "and I am glad to see that Seaton is too good a chemist to buy any platinum jewelry.
The next point to be studied is the magnetic property of a single loop of the wire through which an electric current flows. This current flows from the zinc plate through the liquid to the copper plate, and from thence it flows round the wire ring or circuit back to the zinc plate.
Doubtless thereby being mistaken for one of themselves in the obscurity, I received the inscribed safeguard without opposition, and even an added sum in copper pieces, which I discreetly returned to the one behind the shutter, with the request that he would honourably burn a few joss sticks or sacrifice to a trivial amount, to the success of my journey.
There, as one of my entertainers said to me, you can get a shot at every imaginable kind of game, from a thrush to a man!" Finally, he offered her a pretty little stiletto, less remarkable for its shape and copper mounting than for its origin. A famous bandit had given it to Captain Ellis, and had assured him it had been buried in four human bodies.
The head she lifted against her breast, and then laid it down with horror when she found the bosom of her nightgown was stained with blood. Pulling her wits together, for she felt that she needed them every one, she examined the head and neck. To her horror she found round the throat a strong thin copper wire, which disappeared through a hole in the floor.
The candle, in an ancient copper porta fuoco surmounted by a dove, was then lighted, and the procession of priests started off for the cathedral with their precious flame, escorted by a civic guard and various standard bearers.
The sun sank behind the hills, tinting the ridge of pines to copper and leaving the sky a sweep of palest blue in which a single star trembled. Still Martin did not move. Once he broke into a smothered cry: "I cannot! My God! I cannot!" The words brought Jane to the door. "Martin!" she called. There was no answer and, turning the knob timidly, she came in. "Oh!" she ejaculated.
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