CREATE TABLE table_name_49 (description VARCHAR(255), livery VARCHAR(255), date VARCHAR(255), number_ VARCHAR(255), _name VARCHAR(255))
What's the Description for Scottish Tar Distillers No. 78, that's Livery is black, and a date prior to 1897?
    
SQL: SELECT description FROM table_name_49 WHERE livery = "black" AND date < 1897 AND number_ & _name = "scottish tar distillers no. 78"