Born. To British Army Captain Jan Christiaan Smuts II, 31, younger son of South Africa's Prime Minister, peace time mining engineer, and Daphne Webster Smuts, 29: a son, their first child, the Prime Minister's 13th grandchild, first to bear his name; in Johannesburg, South Africa.

Born. To brunette Cinemactress Joan Bennett Wanger, 33, and Producer Walter Wanger, 48, her onetime boss: their first child, a daughter; after two and a half years of marriage, in Hollywood. Weight: 6 lb. She is also the mother of 15-year-old Diana (by John Fox), 8-year-old Melinda (by Cinemawriter Gene Markey).

Died. Dr. Nicholas John Spykman, 49, Dutch-born geopolitico, Yale professor of international relations since 1928; of a heart ailment; in New Haven. Dapper, high-domed Spykman left seven years of journalism in the Middle and Far East in 1920 to get his Ph.D. at the University of California, became first director of Yale's Institute of International Studies in 1935. In 1942 his widely read America's Strategy in World Politics explored the global basis of power politics, insisted that "the final step ... to order is not the disappearance of force but its use by the community instead of the individual members." At his death he was a teacher at the School of Military Government for U.S. Army officers at the University of Virginia.

Died. Mrs. William Brown ("Missy") Meloney, 60, tiny, long-successful news paperwoman, recently retired editor of the nationally syndicated Sunday weekly, This Week; in Pawling, N.Y.

Died. Dr. Karl Landsteiner, 75, world-famed discoverer of the four human blood types, 1930 Nobel Prize winner; of a heart attack; in Manhattan. Shy, grey-mustached Landsteiner got his M.D. in his native Vienna in 1891, was stricken in the laboratory of the Rockefeller Institute in which he worked for 20 years.

Died. Dr. Joseph Sweetman Ames, 78, physicist, president emeritus of Johns Hopkins University; after long illness; in Baltimore. He enrolled at Johns Hopkins in its seventh year, graduated in 1886, became its fourth president (1929-35) and a great authority on aerodynamics.

Died. Rudger Clawson, 86, president of the Council of Twelve Apostles of the Latter-day Saints; in his native Salt Lake City. Son of an associate of Mormon Founder Joseph Smith, one of the last who saw Brigham Young, plain, gentle, white-thatched Apostle Clawson served most of a four-year Federal sentence for bigamy committed in 1883. Long an able hierarch, in his lifetime he traveled 576,000 miles on church business.

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