POLONNARUWA  , a ruined

city and ancient capital of Ceylon . It first became a royal residence in A.D . 368, when the lake of Topawewa was formed, and succeeded Anuradhapura as the capital in the middle of the 8th century . The principal ruins date chiefly from the time of Prakrama Bahu (A.D . 1153-1186) . The most imposing pile remaining is the Jetawanarama temple, a building 170 it. in length, with walls about 8o ft. high and 12 ft. thick . The city is now entirely deserted, and, as in the case of Anuradhapura, its ruins have only recently been rescued from the jungle .