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followed with "a longer and more thorough examination of the same solid, finding that it was composed of carbon and a little hydrogen". Garden and Brande's separate discoveries were both published in 1820. In 1821, John Kidd described many of this substance's properties and the means of its production. He proposed the name naphthaline as it had been derived from a kind of naphtha, a broad term for various volatile, flammable liquid hydrocarbon mixtures, including coal tar. Naphthalene's chemical formula was determined

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