34 GEOGRAPHY OF THE HOMERIC PERIOD. [CHAP. taining; but Pliny's explanation of that part of it which relates to the sisters is reasonable enough; for he refers it to the custom of wearing amber necklaces, which still continued in his time to be practised by the women in that region, partly for the sake of ornament, and partly as a supposed remedy for the goitre, and other evil results of drinking the water of Alpine streams1. The belief that amber exuded from trees may perhaps have been derived, along with the material, from its original home in Northern Europe; but it is more probable that it was inferred by observation from the analogy of the gum which was seen to drop from pine trees, and which the amber resembled, both in its appearance, and in its inflammable nature and its aromatic scent when burnt. By the Greeks it was associated with the familiar tree of North Italy, the poplar, though it was in reality totally unconnected with it. The origin of the name Eridanus is a still more perplexing question. Kiepert would explain it by a Phoe- Eridanu!Tr nician etymology, as if it were a perversion or adap- tation of the word yarden (Jordan) ' river/ which we have noticed as being found in Crete in the form lardanos*. Others have thought, with greater probability, that it is connected with the river-name Rhodanus, and perhaps also Rhcnus, and that the early Greeks associated it at first with a great river in north-western Europe, from which amber came; whence, after the head of the Adriatic became a great centre of the amber trade, the title was transferred to the principal stream of those parts, the Padus8. The name of the little river Rhodaune, which flows into the Baltic near Dantzig, has also been introduced in this con- nexion. Still, as Herodotus observed4, Eridanus is a purely Greek word; and as the myth with which it is associated is also genuinely Greek, there is no need to go further afield to discover 1 Pliny, 37. 44. Pado vero adnexa fabula est evidente causa, hodieque Transpadanorum agrestibus feminis monilium vice sucina gestantibus, maxume decoris gratia, sed et medicinae, creditur quippe tonsillis resistere et faucium vitiis, vario genere aquarum juxta Alpis infestante guttura hominurn. 8 v. supra, p. 5. 8 Bunburyin^V/. Geogr.> art. * Eridanus, 'and other authorities: cp. Herod. 3- «5- * Herod, be. tit.