‘Nya Pressen. Tidning för politik, handel och industri.’ Helsingfors.

O’Curry (Eugene), ‘On the Manners and Customs of the Ancient Irish.’ Ed. by W. K.  Sullivan. 3 vols. London and Dublin, 1873.

Odhner (C. T.), ‘Lärobok i Sveriges, Norges och Danmarks historia.’ Stockholm, 1873.

Oettingen (A. von), ‘Die Moralstatistik in ihrer Bedeutung für eine Socialethik.’ Erlangen, 1882.

Oldenberg (Hermann), ‘Buddha: His Life, his Doctrine, his Order.’ Trans. by W. Hoey. London, 1882.

Oldfield (A.), ‘On the Aborigines of Australia;’ in ‘Trans. Ethn. Soc.,’ N.S., vol. iii. London, 1865.

Olivecrona (S. R.  D.  K.), ‘Om makars giftorätt i bo.’ 4th ed. Stockholm.

Ortolan (J.), ‘Histoire de la législation romaine.’ Paris, 1876.

Palgrave (W. G.), ‘Narrative of a Year’s Journey through Central and Eastern Arabia.’ 2 vols. London and Cambridge, 1866.

Pallas (P. S.), ‘Merkwürdigkeiten der Morduanen, Kasaken, Kalmücken,’ &c. Frankfurt and Leipzig, 1773.