Emerson G. Spies, 75, a professor emeritus and former dean of the law school of the University of Virginia, died Sept. 24 at his home in Charlottesville after a heart attack.

He was a past chairman of the Law School Admission Test Council.

Mr. Spies, who was law school dean from 1976 to 1980, taught at the law school from 1945 until retiring as professor emeritus in 1985. He was an authority in the fields of real estate finance and property law.

He also had served as special secretary to the university's board of visitors in its search for a new university president. The board hired John T. Casteen III.

Mr. Spies was a native of Akron, N.Y. He was a summa cum laude graduate of what was then Hobart College in New York state. At Hobart, he was elected to Phi Beta Kappa. He then went to England as a Rhodes scholar, attending Oxford University's Brasenose College. At Oxford, he received degrees with highest honors in jurisprudence and civil law.

He returned to this country in 1939 and joined a Wall Street law firm. During World War II, he was an Army lawyer. After the war, he joined the University of Virginia law faculty.

His first wife, Mary Ethel Spies, died in 1966. Survivors include his wife, Julia, of Charlottesville; three children by his first marriage, Richard E. Spies of Lynchburg, Va., and Sally Taylor and Peggy Quarles, both of Charlottesville; four stepchildren, Richard Sobbott of Baltimore, Laura Sobbott of Orlando, Fla., Dan Sobbott of Lynchburg, and Wes Sobbott of Charlottesville; and two grandchildren.