There are numerous names on the street for lysergic-acid-diethylamide: acid, trips, cid, blotter, doses, dots and many others. In 1938 the Swiss scientist Albert Hofmann discovered this potent psychoactive agent (a hallucinogen) .
Hofman lived to the ripe old age of 102 when he died of a heart attack in April of 2008. He did not realize LSDs psycho-pharmacological effects until five years after its synthesis. What a surprise it must have been when he accidentally ingested the drug and was sent on a potent mind altering trip. Apparently (though it is known in some people to create scary and dangerous reactions) it was a pleasant experience for Hofman, since he subsequently took LSD on hundreds of occasions. New York Times
The compound was found by Hofman in the ergot fungus, which grows in rye kernels.