16/42 Those of Pollanarua are much smaller, but they are nevertheless of great extent. Few countries can be more thinly populated than Ceylon, and yet we have these numerous proofs of a powerful nation having once existed. Wherever these lakes or tanks exist in the present day, a populous country once flourished. In all countries which are subject to months of drought, a supply of water is the first consideration, or cultivation must cease. This was the object in forming the tanks, which are especially numerous throughout the Tambancadua district. |