The circumstances under which Leary left Harvard remain a matter of debate. Leary alleged for years that he was fired by Harvard, but Maher denied yesterday that Leary's position at Harvard had been terminated as a result of his experiments.

According to Maher, President Nathan M. Pusey '28 gave Leary leave without pay after the lecturer left Harvard for Hollywood midway through the spring semester of 1963. Leary's contract with Harvard was due to expire at the end of the spring 1963 semester.

Maher said that he reported Leary's absence to Pusey after being told by a friend from the West Coast that Leary had appeared on a television talk show saying that he had been fired by Harvard.

'The Psychedelic Experience'

Whatever the cause of Leary's departure from Harvard, the incident made Leary a national celebrity.

"Being fired from Harvard gave him a notoriety which could not be purchased from a PR agent," said Anthony G. Greenwald, professor of psychology at University of Washington at Seattle.

"Without being fired by Harvard, Leary might have been a very ordinary academic," said Greenwald, who worked as a research assistant for Alpert while a graduate student at Harvard.

Alpert, who later renamed himself Baba Ram Dass, left Harvard soon after Leary. He was fired by Pusey for administering hallucinogenic drugs to undergraduates, The Crimson reported on July 9, 1963.

The two co-wrote The Psychedelic Experience in 1964, a work recommending the combination of hallucinogens and meditative literature, including The Tibetan Book of the Dead for psychedelic enlightenment.

Leary spent much of the next 20 years of his life on the lam. Arrested for marijuana possession, he escaped from the California Men's Colony in 1970, only to be recaptured in 1973 in Afghanistan.

Released in 1976, Leary continued to remain in the public eye as a stand-up comic, author and Hollywood party-goer.

To many who were at Harvard in the early 1960s, Leary's legacy is largely a negative one.

"His whole message was one of personal irresponsibility in the guise of freedom," said Efrem Sigel '64, a Crimson editor who covered much of the psilocybin debate. "He was an authority figure who abused his authority."

"Tim Leary was a very intelligent, articulate, charming, grossly irresponsible individual, totally indifferent to the effects of his behavior on the minds of others," Maher said. "He left no worthwhile, lasting contribution to the field of psychology."

But many would disagree with Maher's opinion that "as the years went by, [Leary] became increasingly irrelevant."

Leary's 1994 work, Chaos & Cyberculture, includes conversations with public figures from Winona Ryder to William S. Burroughs.

Actress Susan Sarandon is quoted in the book as saying that Leary "makes the chaos of our everyday lives sexy."

And in the work's introduction, editor Michael Horowitz stated that Leary's writing is consistently "fueled by humor, brimming with novel perceptions."

--Material from the Associated Press was used in this story.