Dann Siems was assistant professor of biology at Bemidji State University. His research interests included the natural history of fishes, phenotypic plasticity in life history theory, relationship of ontogeny to phylogeny, history, and philosophy of biology, role of behavior and cognition in evolution, and evolutionary psychology. Charles Darwin, the Copley Medal, and the Rise of Naturalism, 1861-1864 is dedicated to his memory.