Ranke (Johannes), ‘Der Mensch.’ 2 vols. Leipzig, 1885-87.
Ratzel (F.), ‘Völkerkunde.’ 3 vols. Leipzig, 1885-88.
Rauber (A.), ‘Homo sapiens ferus oder die Zustände der Verwilderten.’ Leipzig, 1885.
Rawlinson (George), ‘The Five Great Monarchies of the Ancient Eastern World.’ 3 vols. London, 1871.
Reade (W. Winwood), ‘Savage Africa.’ London, 1863.
Reclus (Élisée), ‘Nouvelle géographie universelle.’ In progress. Paris, 1875, &c.
Redhouse (J. W.), ‘Notes on Prof. E. B. Tylor’s “Arabian Matriarchate.”‘ [London, 1884.]
'Registrar-General of Births, Deaths, and Marriages in England, Annual Report of the.’ London.
Regnard (J. F.), ‘A Journey to Lapland.’ Trans.; in Pinkerton, ‘Collection of Voyages and Travels,’ vol. i. London, 1808.
Reich (Eduard), ‘Geschichte, Natur-und Gesundheitslehre des ehelichen Lebens.’ Cassel, 1864.