Zambe'sl, Vasco da Gama's ' River of Good Signs,' ranking with the Congo and the Nile as a means of communication with the interior of Africa, is between 1550 and 1600 miles long, and drains more than half a million miles of territory. Soon after its rise in the marshy country to the west of Bangweolo it passes through Lake Dilolo at the SW. corner of the Congo Free State; and on its way to the Indian Ocean it receives many tributaries, notably the Loamba, Kafue, Loangwa, and Shire. For about two-thirds of its length it flows through British protected territory, entering the Portuguese possessions near Zumbo (550 miles from the sea). The river is navigable, with occasional interruptions, to the Victoria Falls, 900 miles from the sea. At these falls, discovered in 1855 by Dr Livingstone, the river, here 1000 yards broad, drops sheer into a huge fissure in the earth's surface nearly 400 feet deep. The great girder bridge to carry the Cape-to-Cairo railway across the Zambesi (400 yards below the falls) was finished in 1905. Beyond this for 700 miles the river forms a frequently interrupted waterway to the interior. The delta of the Zambesi comprises an area of 2500 sq. m., and it has a number of mouths all more or less blocked with sand (Chinde, Kongoni, etc.).