LSD, or lysergic acid diethylamide-25, is one of the most potent mind-altering chemicals known to man. The discovery of LSD is attributed to Dr. Albert Hofmann, a German scientist. Initial testing of the chemical in 1938 did not lead to any striking new finding, and research was discontinued. Five years later, on April 16, 1943, Hofmann re-synthesized the compound to do further research. To his surprise, he discovered the psychoactive hallucinogenic properties of the drug, apparently by absorbing a small amount through his fingertips."