==Shipping== Although Argentina has an extensive coast-line, and one of the great fluvial systems of the world, the tonnage of steamers and sailing vessels flying her flag is comparatively small.
ruthenus), the tench, the gudgeon and other fluvial species also appear in immense numbers.
It is the central fluvial artery of Brazil, running from south to north for a distance of about 150o m.
But the relief of the tableland has been wholly changed by fluvial action.
Originally conquered by the fluvial deposits from the sea, it now stretches out as a vast dead level, in which the rivers find their velocity checked, and their current no longer able to carry along the silt which they have brought down from northern India.