Robert C. MacArthur, a retired research physicist, died in his Bowmansville home Wednesday after suffering a heart attack. He was 91.
A native of Urbana, Ill., he graduated from Syracuse University and Oberlin College.
Mr. MacArthur worked as a research physicist at Cornell Laboratories from 1947 to 1968, when he retired.
As a young adult, he did medical research at the University of Buffalo.
He was a member of a Great Books Discussion Club and the Iris Society.
Survivors include his wife, the former Charlotte Drews; a daughter, Sarah J. Kidd of Wrentham, Mass.; a son, William R. of Lansdale, Pa.; four grandchildren; and two great-grandchildren.
A memorial service will be held at 5 p.m. Feb. 18 in the auditorium of Greenfield Health & Rehabilitation Center, 5949 Broadway, Lancaster. Burial was in Transit Rural Cemetery, Bowmansville.