Two eminent scholars collaborated in the writing of this volume, which remains a standard work on ancient travel and discovery. Concerned with the actual journeys made rather than with the geographical speculations of ancient scholars, they tell how, before Arabic expansion closed the gates of the Mediterranean Sea, men had coasted Western Europe and penetrated the continent south of the Danube and Rhine, sailed from Suez to Canton and probed deeply into Asia, and--even if they failed to circumnavigate Africa--had been as far as Sierra Leone and Port Delgado.