Thallium n. (Chem.) A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.
... is said to have asked the Royal Society. A still more extraordinary question has been propounded in the grave pages of the Quarterly Journal of Science, edited by Mr. Crookes, a Fellow of the Royal Society, and the discoverer of the useful metal thallium. The problem set in this learned review does not, like that of the Merry Monarch, beg the question of facts. "What is the scientific inference from the various accounts, modern and traditional, of human ... — Lost Leaders • Andrew Lang Read full book for free!
... (Cosmos les Mondes) notes that the thermic constant of thallium is exactly the mean of the thermic constants of potassium and lead, the two metals which it most ... — Scientific American Supplement, No. 455, September 20, 1884 • Various Read full book for free!
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