the ancient Athesis, a large river of Italy, formed by several rivulets which rise in the Rhaetian Alps and unite near Glarus, where it has the name of Eisach. After flowing eastward to Bolzano it takes the name of Adige, and, receiving the Eisach, becomes navigable. Then flowing southwards, and afterwards in an eastern direction, it passes Trent and Verona, and at length falls into the Gulf of Venice, after a course of about 250 miles.