Thomas Carnelley dating history

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Thomas Carnelley (22 October 1854 – 27 August 1890) was a British chemist who contributed to physical chemistry and was involved in introducing German-inspired chemistry research into Britain as professor of chemistry at the University of Dundee and later at Aberdeen. He studied the relationships between the melting and boiling points of the salts of elements and their positions in the periodic table. He also examined relationships between molecular structures and physical properties and came up with a rule that is sometimes called "Carnelley's Rule".