Complex sentence: From 1880 to 1886, Dudley was professor of chemistry and toxicology at Miami Medical College in Cincinnati, Ohio and commissioner of the Cincinnati Industrial Exposition from 1881 to 1885.
Split into simpler sentences: From 1880 to 1886 Dudley was professor of chemistry and toxicology at the Miami Medical College in Cincinnati, Ohio. He was commissioner of the Cincinnati Industrial Exposition from 1881 to 1885.