The Society of Toxicology (SOT) has learned of the passing of Henry d’ Arcy Heck on October 13, 2014. He served as the Editor-in-Chief of Fundamental and Applied Toxicology, now Toxicological Sciences, the official journal of SOT. He was born in Bryn Mawr, Pennsylvania in 1939 and received an AB with honors in 1961 from Princeton University and a PhD in 1964 from Northwestern University. He was a National Science Foundation fellow at Northwestern as well as at the Max Planck Institute for Physical Chemistry, Germany. He was an Assistant Professor of Chemistry at the University of California, Berkeley, and an analytical chemist at the Stanford Research Institute in Menlo Park, California. For 22 years, Dr. Heck was at the Chemical Industry Institute of Toxicology, now the Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina. An obituary in the Virginian Pilot noted that “He was the author of over 100 scientific articles and reviews and…mentored several postdoctoral students, who went on to successful careers in analytical toxicology.” Dr. Heck joined SOT in 1982 and was a member of the Carcinogenesis, Comparative and Veterinary, In Vitro (now In Vitro and Alternative Methods), Inhalation (now Inhalation and Respiratory), and Mechanisms Specialty Sections.