ALBULA PASS  , now the

principal route from the N. to the Upper Engadine in the Swiss canton of the Grisons . It was already frequented in the 13th century, while a carriage road (highest point, 7595 ft.) was constructed across it in i865, but for a long time it was not as much used as the easier and more direct Julier Pass (7504 ft.), until the opening of the railway in 1903, which has vastly increased its practical importance . Starting from Coire the Rhine valley is followed to Reichenau (64 m.), and then that of the Hinter Rhine to Thusis (102 m.) . The line then runs through the grand Schyn gorge (cut by the Albula torrent) to Tiefenkastell (74 m.), where it leaves the Julier road on the right I . 17-ALBUMIN 513 (S.) and continues to follow the course of the Albula Rast Filisut and Bergun (121 m.) to the mouth (5879 ft.) of the great tunnel (34 M. in length; highest point, 5987 ft.) which has been pierced below the pass . The descent lies through the Bevers glen to Bevers (21 m.), where the Upper Engadine is reached, about 5 M. below St . Moritz, which is 56 m. from Coire by this route . (W . A . B .