[186] Lectures on Man, his Place in Creation, and in the History of the Earth, by Dr. Carl Vogt. Edited by James Hunt, Ph.D. (London, 1864), p. 466 ff.
[187] The fact mentioned both by the Baron de Bonstetten and Dr. Keller, of celts of jade and nephrite having been found in Switzerland, materials which, according to the latest investigations [1869], are not found in the Alps, but must have been imported from the East, proves that intercommunication and barter must have been carried on between distant countries at the time when such weapons were used.—Baron de Bonstetten, Recueil d’Antiquités Suisses (Berne, 1855), p. 12; Keller, The Lake Dwellings of Switzerland (1866), pp. 56, 68 (cf. 1878, pp. 72, 195, 205, 215).
[188] Prehistoric Times, by Sir John Lubbock, Bart., F.R.S., London (1865), p. 147.
[189] Prehistoric Times, by Sir John Lubbock, Bart., F.R.S. (1865), pp. 142-3; Results of the Investigation of Animal Remains from the Lake Dwellings, by Prof. Rütimeyer; in The Lake Dwellings of Switzerland, by Dr. Ferdinand Keller, translated by J. E. Lee, F.S.A., F.G.S., 1866, pp. 355-62 (1878, pp. 537-44).
[190] Moosseedorf, Keller, l. c., p. 35; Robenhausen, Keller, l. c., p. 40.
[191] (The first two sentences of this paragraph have been transposed, for clearness.—Ed.)
[192] Max Müller, Science of Language, second series (London, 1864), p. 230.
[193] Rawlinson, The Five Great Monarchies of the Ancient Eastern World (1864), vol. i. p. 123.
[194] Klemm, Werkzeuge und Waffen (Sondershausen, 1858), p. 96.
[195] Keller, l. c., p. 116: (1878, p. 121).