This office is divided into four departments, dealing with (i.) the business of the Bundesrat, the Rcichstag, the elections, citizenship, passports, the press, and military and naval matters, so far as the last concern the civil authorities; (ii.) purely social matters, such as old age pensions, accident insurance, migration, settlement, poor law administration, &c.; (iii.) sanitary matters, patents, canals, steamship lines, weights and measures; and (iv.) commercial and economic relationssuch as agriculture, industry, commercial treaties and statistics.