Note 187 — PRIMITIVE WARFARE III ON THE RESEMBLANCES OF THE WEAPONS OF EARLY RACES; THEIR VARIATIONS, CONTINUITY AND DEVELOPMENT OF FORM: METAL PERIOD.[184]

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).