Chemical balance

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“The most accurate method of determining the specific gravity of a mineral is by the use of a chemical balance. To one beam of the balance is suspended a wire basket which is so arranged that it can be immersed in a beaker of water. The basket is hung in the water and then counterbalanced by weights on the opposite pan of the balance. The mineral specimen to be tested, having been first weighed on the balance in the ordinary fashion, is now placed in the basket under the water and weighed again.” — Ford, 1912


William E. Ford Dana's Manual of Mineralogy (New York: John Wiley and Sons, Inc, 1912) 63


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