Question: When was successor George E. Harris (R) seated?
SQL: SELECT "Date successor seated" FROM "1-2417345-4" WHERE "Successor" = 'George E. Harris (R)';

Question: What was the reason for change when the successor was William Milnes, Jr. (C)?
SQL: SELECT "Reason for change" FROM "1-2417345-4" WHERE "Successor" = 'William Milnes, Jr. (C)';

Question: When were the successor/s seated for Ohio 10th?
SQL: SELECT "Date successor seated" FROM "1-2417345-4" WHERE "District" = 'Ohio 10th';

Question: Name the reason for change when George W. Greene (D) was the vacator.
SQL: SELECT "Reason for change" FROM "1-2417345-4" WHERE "Vacator" = 'George W. Greene (D)';

Question: When was successor David Atwood (R) seated?
SQL: SELECT "Date successor seated" FROM "1-2417345-4" WHERE "Successor" = 'David Atwood (R)';