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| | HENRY CHARLES LEA - LoveToKnow Article on HENRY CHARLES LEA (Site not responding. Last check: 2007-10-03) |
 | | In regard to the ancients' knowledge of lead compounds, we may state that the substance described by Dioscorides as fM\vftSaiva was undoubtedly litharge, that Pliny uses the word minium in its present sense of red lead, ana that white lead was well known to Geber in the 8th century. |
 | | It is widely distributed in the United States, and occurs in Mexico and Brazil; it is found in Tunisia and Algeria, in the Altai Mountains and India, and in New South Wales, Queensland, and in Tasmania. |
 | | The United States, which ranked third with a production of 20,000 tons in 1850, maintained this annual yield, until 1870, when it began to increase; the United States now ranks as the chief producer; in 1900 the output was 253,000 tons, and in 1905, 319,744 tons. |
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