Reproduction of the original.

Under the pseudonym J. J. Connington, Alfred Walter Stewart (1880-1947) wrote seventeen well-received detective novels; Nordenholt's Million is his only science fiction novel. Stewart was a distinguished British chemist and author of the popular textbooks Recent Advances in Organic Chemistry (1908) and Recent Advances in Physical and Inorganic Chemistry (1909). Via a 1918 theory of the physical chemistry of radioactivity, he contributed the term isobar--as complementary to the term isotope--to science.

Matthew Battles is the author of Library: An Unquiet History, Palimpsest, and Tree, as well as the story collection The Sovereignties of Invention. His writing on the cultural dimensions of science, technology, and the natural world have appeared in the Atlantic, the Boston Globe, and Orion. For Harvard's metaLAB, he develops research into the dark abundance of collections, cultural and technology, and conditions of experience in the context of deep time.

Evan Hepler-Smith teaches the history of science and technology and environmental history at Duke University. He has a special interest in the history of chemicals and chemistry, information technology, and environmental regulation. His book in progress is entitled Compound Words: Chemical Information and the Molecular World. His writing has been published in the New York Times, the Wall Street Journal, Time.com, and Public Books.