Several of these single-tree canoes have been found, one of which is 43 ft.
Their canoes, sometimes more than 1 00 ft.
Few of them therefore are of much service for navigation, except for the light-draught native canoes; and all of them are more or less closed at their outlets by sand-bars.
Where other means are not available, goods are carried by canoes, or on the shoulders of bearers along the native footpaths.
In central Celebes, the Kodina flows into Lake Posso, and the Kalaena discharges to the Gulf of Boni; the Posso, navigable by blottos (canoes formed of hollowed tree-trunks), is the only river flowing from the lake to the Gulf of Tomini.