Died. John Ray Dunning, 67, pioneering American nuclear physicist; of a heart attack; in Key Biscayne, Fla. Dunning directed the 1939 experiment at Columbia University's cyclotron in Manhattan that confirmed the findings of scientists in Germany and elsewhere about the possibility of controlled atomic fission. "Believe we have observed new phenomenon of far-reaching consequences," he scrawled in a diary. Dunning's later research showed that Uranium 235 was the most fissionable isotope, a discovery that led to the gas-diffusion method of refining U-235, currently used in nuclear bombs and most atomic power plants. -

Died. Charles Revson, 68, autocratic board chairman of Revlon, Inc., who helped create the $5 billion U.S. beauty industry; of cancer; in Manhattan (see ECONOMY & BUSINESS).

Died. Sidney Buchman, 73, film producer and scenarist; following a heart attack; in Cannes, France. A top Hollywood screenwriter (The Sign of the Cross, Mr. Smith Goes to Washington) and a Columbia Pictures producer, Buchman was blacklisted after admitting to a congressional committee in 1951 that he had once been a Communist. He returned to film work in the 1960s serving as one of the writers on the Elizabeth Taylor-Richard Burton epic, Cleopatra, and later produced and wrote the film adaptation of Mary McCarthy's bitchy bestseller, The Group.

Died. John Shaw Billings, 77, former managing editor of TIME (1933-36), first managing editor of LIFE (1936-44) and later editorial director of all Time Inc. magazines; of kidney failure and pneumonia; in Augusta, Ga. (see THE PRESS).

Died. Dr. Irwin M. Stillman, 79, co-author of The Doctor's Quick Weight Loss Diet (1967) and other bestselling weight-control guides, whose drastic prescription for obesity--quick shedding of excess pounds through an extreme highprotein, low-carbohydrate regimen--brought him a wide following as well as much criticism from more conventional nutrition experts; of a heart attack; in North Miami, Fla.

Died. Robert Cruickshank, 80, plucky Scottish-born Hall of Fame golfer and gallery favorite; in Delray Beach, Fla. Winner of 20 PGA tournaments from 1921-50, the "Wee Scot" played with an ebullience that once moved him to doff his cap, throw his club in the air and shout, "Thank you, God!" after a crucial shot bounced out of a brook and onto the green. The club, naturally, landed on his head.

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