Napoleon, [4]
Newspapers, advertisements in, [83]
——, editorship of, [68]
——, A.D. 2000, how illustrated, [80]
—— —— ——, language of, [82]
—— —— ——, how printed, [79]
O
Ocean cities, [98]
—— —— and the anhydrator, [99]
—— ——, urban traffic in, [98]
Oersted, [117]
Oxygen, uses of, [9], [26], [102]
Ozone and ozonators, [27]