In the Amazon Jungle - Adventures in Remote Parts of the Upper Amazon River, Including a - Sojourn Among Cannibal Indians by Algot Lange
page 105 of 154 (68%)
page 105 of 154 (68%)
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a quantity of yellowish grains measuring, say, one thirty-second of
an inch in diameter, slightly adhering to each other, but separating upon pressure of the finger, and around this a thick layer of hard clay or mud of somewhat irregular shape. It immediately struck me that the yellow substance might be gold, though I could not account for the presence of it in the centre of the clay-balls. I carefully scraped the granules out of the clay, and washing them clean, placed them on a sheet of paper to dry in the sun. By this time the attention of the other men had been attracted to what I was doing, and it seemed to amuse the brave fellows immensely to watch my painstaking efforts with the yellow stuff. I produced some fine scales I had for weighing chemicals for my photographic work, and suspended these above a gourd filled with water. Then I went down to the creek and collected more of the clay-balls and scraped the mud of one away from the solid centre of what I took to be grains of gold. A fine thread I next wound around the gold ball and this was tied to one end of the balance. After an equilibrium had been established, I found that the weight of the gold was 660 grains. Next I raised the gourd until the water reached the suspended ball, causing the opposite pan of the scales to go down. To again establish equilibrium, I had to add 35 grains. With this figure I divided the actual weight of the gold, which gave me 18.9, and this I remembered was close to the specific gravity of pure gold. Still a little in doubt, I broke the bulb of one of my clinical thermometers and, placing the small quantity of mercury thus obtained in the bottom of a tray, I threw a few of the grains into it, and found that they immediately united, forming a dirty-grey amalgam. I was now sure the substance was gold and in less than five hours I |
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