Abstract
LAST May, in conjunction with Mr. H. Hyman, I published the result of an examination of the relative atomic weight of a small specimen of lead, less than one gram, separated from a kilogram of Ceylon thorite, which showed a value rather more than a unit in excess of that found for a specimen of ordinary lead. I have since been engaged in extracting the lead from 33 kilograms of Ceylon thorite, which was first carefully sorted by hand, piece by piece, into various grades. From the finest grade, consisting of 20 kilograms, about 80 grams of lead were obtained, in agreement with the percentage obtained by analysis.
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SODDY, F. The Density of Lead from Ceylon Thorite. Nature 94, 615 (1915). https://doi.org/10.1038/094615b0
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DOI: https://doi.org/10.1038/094615b0
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