CREATE TABLE table_2192067_4 (reason_for_change VARCHAR, date_successor_seated VARCHAR)

what is the reason for change where the date the successor was seated was july 28, 1876?
SELECT reason_for_change FROM table_2192067_4 WHERE date_successor_seated = "July 28, 1876"
SELECT "reason_for_change" FROM "table_2192067_4" WHERE "July 28, 1876" = "date_successor_seated"