Carl G. Rosberg, an expert in African politics and professor emeritus of political science, died Oct. 3 in Oakland following a long series of illnesses. He was 73.

On the faculty since 1958, Rosberg was director of the Institute of International Studies, 1973 to 1989, and chair of the Department of Political Science, 1969 to 1974. He was also chair of the African Studies Center.

Born in 1923 in Oakland, Rosberg served in the U.S. Air Force as a navigator during World War II. He was shot down over Romania in 1944 and was a prisoner of war until liberated by Russian troops in 1945.

Rosberg went on to earn his doctorate at Oxford University in 1954. In subsequent years at Berkeley, he played a key role in organizing scholarly exchanges with the former U.S.S.R. and China, then virtually closed to the world's academic community.

He had a tremendous impact as a teacher and mentor of graduate students, particularly African students. Many of those he taught assumed leadership roles in African studies at major universities around the world, and today many hold senior government positions.

Of many scholarly works Rosberg wrote, two remain seminal in the field: "The Myth of 'Mau Mau': Nationalism in Kenya" and "Personal Rule in Black Africa."

The Carl G. Rosberg International Studies Library and a 1994 Berkeley Citation are among his honors and awards.

Rosberg leaves his wife, Elizabeth, who lives in Berkeley, and two sons, James Rosberg of Boston, and David Rosberg of Berkeley.

There will be no funeral service. Contributions may be made to the Nature Conservancy, 1815 N. Lynn St., Arlington, VA 22209.

Irving Fatt, professor emeritus of engineering science in the College of Engineering and of physiological optics in the School of Optometry, died Oct. 5 of cancer at his home in Berkeley. He was 76.

Fatt's life-long interest was the flow of fluids through small pores, a specialty he applied to the flow of petroleum through porous rock, oxygen and carbon dioxide through the cornea, and tears around contact lenses. He is perhaps best known for early basic science work on the physiology of the cornea, which led to many critical advances in the contact lens field.

Born in Chicago in 1920, Fatt came to Berkeley in 1957 as an assistant professor of mineral technology. He went on to create the bioengineering undergraduate and graduate programs in the College of Enginering, and served as assistant dean for graduate studies of the college.

In 1967 he began collaborating with the School of Optometry, where he eventually served as associate dean and then acting dean. Upon his retirement in 1984, he was awarded Berkeley's highest honor, the Berkeley Citation.

Fatt is survived by his wife, Constance Ruben of Berkeley, a daughter, Lois E. White of Cassel, Calif., and two brothers, Paul Fatt of London and Milton Fatt of Long Beach, Calif.

The family requests that, in lieu of flowers, donations be made to the Sam Ruben and Irv Fatt Memorial Fund for Graduate Education in the College of Chemistry, or to a charity of choice.

The first of two memorial services is scheduled for Thursday, Oct. 24, at 3:30 p.m. in the Great Hall of the Faculty Club. A second, at the Berkeley Yacht Club, is scheduled for Sunday, Oct. 27, at 3 p.m.