The largest are those of Minneria, Kandellai,
Padavellkiellom, and the Giant Tank. These are from fifteen to
twenty-five miles in circumference; but in former times, when the
sluices were in repair and the volume of water at its full
height, they must have been much larger.
In those days the existence of a reservoir of water was a certain
indication of a populous and flourishing neighborhood; and the
chief cities of the country were accordingly situated in those
places which were always certain of a supply. So careful were
the inhabitants in husbanding those liquid resources upon which
their very existence depended that even the surplus waters of one
lake were not allowed to escape unheeded. Channels were cut,
connecting a chain of tanks of slightly varying elevations, over
an extent of sixty or seventy miles of apparently flat country,
and the overflow of one tank was thus conducted in succession
from lake to lake, until they all attained the desired level.
In this manner was the greater portion of Ceylon kept in the
highest state of cultivation. From the north to the south the
island was thickly peopled, and the only portions which then
remained in the hands of nature were those which are now seen in
the state of primeval forest.
Well may Ceylon in those times have deserved the name of the
"Paradise of the East." The beauties which nature has showered
upon the land were heightened by cultivation; the forest-capped
mountains rose from a waving sea of green; the valleys teemed
with wealth; no thorny jungles gave a barren terminable prospect,
but the golden tints of ripening crops spread to the horizon.
