[H.] —— Urgeschichte Europas (trans. Jiriczek). Strassburg, 1905.
[I.] —— L’Europe préhistorique (trans. Philipot). Paris, 1907.
[J.] Montelius, O. Kulturgeschichte Schwedens. Leipsic, 1906.
[K.] —— Les Temps préhistoriques en Suède (trans. Reinach). Paris, 1895.
[L.] Avebury, Lord (Sir John Lubbock). Prehistoric Times. New York, 1913.
[M.] Elliot, G. F. S. Prehistoric Man and His Story. London, 1915.
[N.] Schwantes, G. Aus Deutschland’s Urzeit. Leipsic, 1913.
[O.] Wundt, W. Elements of Folk Psychology (trans. Schaub, E. L.). London, 1915.
CHAPTER I—THE COMING OF MAN
[1.] Lull, R. S. Organic Evolution. New York, 1917.