32 GEOGRAPHY OF THE HOMERIC IMCRtOD. [CHAP. North Germany furnish large quantities; in Courlnnd also, towards the Gulf of Riga, it is dug up as a fossil. The question therefore arises, by what line of traffic it reached the Mediterranean. In Roman times we have clear evidence that it was through Pan- brought across Germany by way of Pannonia to the nonia> head of the Adriatic, for Pliny tells us that in Nero's reign a Roman knight, who was despatched for that purpose, brought a large supply by that route to Rome1. It is highly probable that the northern traffic had followed the same direction from a very early time. The testimony which is borne to this by archoeological discoveries is very strong3; and it is only thus that we can explain the legends that existed among the Greeks concerning offerings that were sent at a primitive period on several occasions by the Hyperboreans in the far north to Delos by the way of the Adriatic and Dodona, sometimes under the escort of maiden envoys of that race*. This supposition also furnishes the easiest explanation of the numerous intimations which connect the amber trade with the mouth of the Po; for, though it has been attempted to explain these by supposing the existence of another route from the German Ocean to the head of the Adriatic by the way of North Italy, yet this view has little more than conjecture to support it. At the same time it may well have happened that amber found its way to the Mediterranean in another direction] and this was undoubtedly the case subsequently to the expedition of Pythcas to Northern Europe in ttaughGaui. tlie fr>urtn century B.C., when both the tin and amber trades were opened out to the merchants of Massilia by means of the overland route across Gaul and down the valley of the Rhone. Indeed, there is evidence to show that even before that date these articles followed that line of traffic, as x Pliny, H. N.t 37. 45; Sexcentis millibus passuum fere a Carnunlo Pannonlae abesse litus id Germaniae ex quo invchitur pcrcognilum uupcrj vivitque eques Romanus ad id comparandum missus ab Juliano curante gladia- torum munus Neronis principis, qui et conmercia ea ct litora peragravlt, tanta copia invecta ut retia coercendis feris podium prolegeutm sucinis nodarcntur, anna vero et libitina totusque unius diei apparatus esset e suctno, a See Mr A. J. Evans's remarks in Freeman's History tf Sicify vol. 4, P. 220. 8 Herod. 4. 33—5.