Born. To Grace Slick, 31, acid-voiced rock singer, and Paul Kantner, 29, guitarist, both of Jefferson Airplane fame: a daughter; in San Francisco. Name: "god" (a small g). No plans for marriage: god will have no surname. Said Grace: "Art Linkletter and Al Capp will be disappointed to learn that she is very healthy, in spite of what they say about drug-crazed hippies."

Divorced. John Fell Stevenson, 34, son of the late Adlai Stevenson, and Natalie Owings Stevenson, 31; on grounds of irreconcilable differences; after nine years of marriage, three children; in San Francisco.

Died. Dr. Max Beberman, 45, originator of the still controversial "new math"; of heart disease; in London. Beberman revised the conventional mathematics curriculum for an experimental high school in Urbana, Ill., in the early 1950s on the premise that learning by rote bores children. His techniques encouraged students to discover basic mathematical principles on their own initiative, and though some remain skeptical, the new math is coming into increasing use throughout the U.S.

Died. Colonel Jacobo Arbenz Guzman, 57, far-leftist President of Guatemala, deposed in 1954 by a U.S.-sponsored exile invasion; by drowning after falling in his bathtub; in Mexico City. Known as "the Red Colonel," Arbenz was elected President in 1950 after the murder of his anti-Communist rival, Francisco Arana; once in office, Arbenz expropriated U.S. property, opened relations with Communist-bloc nations and generally established himself as a thorn in the U.S. side--so much so that in 1954 a CIA-supported force routed Arbenz's forces. The tactic was so successful that some observers believe it led the U.S. to try an encore in the disastrous 1961 Bay of Pigs invasion of Castro's Cuba.

Died. Martha Baird Rockefeller, 75, onetime concert pianist, second wife and widow of John D. Rockefeller Jr. and stepmother to the five Rockefeller brothers and their sister, Mrs. Jean Mauze; of a heart attack; in Manhattan. Young Martha Baird played under such conductors as Pierre Monteux, Sir Thomas Beecham and Serge Koussevitzky. She retired in 1931, married Rockefeller in 1951 and became a generous patroness of music. Besides establishing the Martha Baird Rockefeller Fund for Music to aid young musicians, she backed the recent Metropolitan Opera productions of Norma and Fidelio and the New York City Opera's Rigoletto.

Died. William Griffith Wilson, 75, co-founder of Alcoholics Anonymous (see BEHAVIOR).

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