Roger Adams completed his Harvard doctorate in chemistry in 1912. From 1922 to 1932 he was editor of the Journal of the American Chemical Society and contributed nineteen essays on cannabis chemistry from his research at Noyes Chemical Laboratory, University of Illinois, during the 1940s. The Harvey Lecture reprinted in this volume is a report on his cannabis research up to 1924.

Samuel Allentuck, M.D., is a member of the American Board of Psychiatry and Neurology. He was director of the clinical experiments at the Welfare Island Hospital under Mayor La Guardia's Commission on Marihuana. He is a psy; chiatrist in private practice in New York City.

Frances Rix Ames received her M.D. from the University of Capetown in 1942 and her M.Med. in 1954. She also holds a doctorate of psychiatric medicine and is on the staff of the department of neurology at the Groote Schuur Hospital.

John Bell was elected a fellow and councilor for the New Hampshire Medical Society in 1846. He published numerous articles on various botanical subjects and published a paper describing the effects of consanguinity upon the physical and mental makeup of offspring in 1859.

Edward Birch, M.D., entered the India Medical Service in 1866 and spent nearly the whole of his service in Bengal. He was civil surgeon of Hazaribagh, later superintendent of the Presidency General Hospital, and later still principal of the Medical College, Calcutta. In 1902 he completed his fourth edition of Birch's Management of Children in India.

Alfred Crancer, Jr. received a master's degree from American University in 1963 in mathematics and statistics. He was formerly director of research for the State of Washington Motor Vehicle Department and currently serves as evaluation coordinator for the U.S. Department of Transportation Office of Alcohol Countermeasures. He has published many other papers on the applications of driving simulator technics in the assessment of effects of various drugs on driving ability.

John Preston Davis became a physician in 1934 at the University of Pennsylvania School of Medicine. He is a member of the American Board of Internal Medicine and a professor at Bowman Gray School of Medicine of Wake Forest College, Winston-Salem, North Carolina.

James Foulis studied under Lister at both Glasgow and Edinburgh schools of medicine. He received his M.D. from Edinburgh University in 1875. He published several papers on obstetrics and received numerous awards for his medical scholarship.

Herbert C. Hamilton, M.S., was a full-time chemical engineer for the Parke-Davis company. He published several other papers on pharmaceutical effects of cannabis in pharmaceutical journals. He was a member of the American Pharmaceutical Association and retired from the company in 1934.

Hobart Amory Hare received his M.D. from the University of Pennsylvania in 1884, became professor of materia medica at Jefferson Medical School, wrote numerous prize-winning medical research articles, and edited numerous medical and scientific publications, including Therapeutic Gazette. He was a president of the Philadelphia College of Physicians and a member of many medical specialty societies.

Walter Siegfried Loewe, M.D., Ph.D., was educated at the universities of Freiburg, Berlin, Munich, and Strasbourg, and became an M.D. in 1908. A professor of pharmacology in several German universities, Loewe left Germany in 1934 to join the medical staff at Mt. Sinai Hospital. As a research fellow for ten years, beginning in 1936, at Cornell Medical College, he conducted his pharmacological experiments on marijuana. In 1946 Dr. Loewe became Research Professor of Pharmacology, College of Medicine, University of Utah.

Charles Robertsham Marshall obtained an M.A. at Cambridge and an LLB. at St. Andrews College before receiving an M.D. from Victoria College in 1899. He was professor of materia medica at the University of Aberdeen and author of a textbook on materia medica.

Jansen Beemer Mattison was graduated M.D. from Bellevue Hospital Medical College in 1867. A member of the Brooklyn Neurological Society and the American Association for the Cure of Inebriety, he devoted himself to the study and treatment of narcotic inebriety and authored more than seventy papers on various phases of this disease.

Tod Hiro Mikuriya, a psychiatrist in private practice, was formerly in charge of marijuana research at the National Institute of Mental Health. He was a consultant to the National Commission on Marihuana and Drug Abuse. Dr. Mikuriya has authored a number of essays on a spectrum of marijuana topics, including "Marijuana in Morocco," "Marijuana in Medicine, Past, Present, Future," and "Historical Aspects of Cannabis Sativa in Western Medicine."

David Franklin Musto acquired his M.D. at the University of Washington School of Medicine in Seattle in 1963. His medical specialties include psychiatry and internal medicine. Dr. Musto, as assistant professor of history and psychiatry at Yale, has conducted research in association with the Child Study Center there. He is a consultant to the National Commission on Marihuana and Drug Abuse and has recently published a book on the history of drugs and the law.

John Christopher O'Day, M.D., graduated from National Normal University College of Medicine in 1896 and from Rush Medical College in 1900. He was a member of the American College of Surgeons.

Sir William Brooke O'Shaughnessy, upon graduating as M.D. from Edinburgh University, entered the East India Company's service as a surgeon in Bengal and Agra and as professor of chemistry in Calcutta. He devoted much of his interest to the electric telegraph and in 1854, as director-general of telegraphs in India, he oversaw the laying down of four thousand miles of lines between major Indian cities. A message over these lines saved a garrison during the Sepoy Rebellion, for which he was knighted in 1856.

Joseph Price Remington, Ph.M., F.C.S., graduated in 1866 from Philadelphia College of Pharmacy, where he then became professor of theory and practice of pharmacy. He became the leading figure of his time in American pharmacy as a promoter and director of research, vice-chairman of the U.S. Pharmacopoeia (1880-1891), and chairman of the council of the American Pharmaceutical Association.

Sir John Russell Reynolds took up a practice in London upon acquiring an M.D. in 1852. He became professor of Medicine at University College and specialized in the study of nervous diseases, electrotherapy, and scientific evaluations of the legal tests for insanity. He was physician to the queen's household and twice president of the Royal College of Physicians.

Alexander Theodore Shulgin completed his college education at the University of California with a doctorate in biochemistry in 1954. As a research chemist for Dow Chemical Company and an expert in phenethylamine chemistry, Dr. Shulgin's work in myristicin chemistry led to the first synthesis of DOM (STP) and MMDA.

Robert P. Walton was born in Guthrie, Kentucky, received a Ph.D. from Columbia University in 1929, and became an M.D. at the University of Chicago in 1941. In 1939 he authored a comprehensive report, Marihuana, America's New Drug Problem, from which this volume has reprinted two chapters. In 1942, Dr. Walton became professor of pharmacology and therapeutics at the Medical College of South Carolina, a post he held until his death.

Andrew T. Weil concluded his Harvard education with an M.D. in 1963. He has contributed several essays dealing with clinical research on marijuana and O-phenethylamines. He is the author of The Natural Mind, a book on altered states of consciousness, and recently conducted a botanical and anthropological expedition in Brazil's Orinoco River basin.