A close reading of the Periplus of the Erythraean Sea (1st century CE), an anonymous captain's manual written in everyday Greek, provides ways of thinking about broader questions concerning the connectedness of the Indian Ocean and the Mediterranean. It is located primarily in the Red Sea, an interstitial zone between the two large seas, and concerns long-distance networks of exchange between South Asia, the Arabian peninsula, the Horn of Africa, Alexandria, and beyond that the Mediterranean. Among the issues to emerge (...) are the linear nature of spatial experience and the means by which commodities are mapped. A goal of the article is to identify ways in which to link the practice and representations of travel. (shrink)