This desiccation is partly attributable to the unrestricted felling of wood practised for many centuries by the inhabitants.
In Felling ?
In addition to rice-growing and the felling and extraction of timber, and the fisheries, the chief occupations are rice-husking, silk-weaving and dyeing.
The Hevea product is obtained annually by tapping the trees and coagulating the sap over a smoky fire, but the caucho is procured by felling the tree and collecting the sap in a hollow in the ground where it is coagulated by stirring in a mixture of soap and the juice of a plant called vetilla.
Forestry also employs a certain proportion of the population, but the felling of trees is carried on wastefully, though less so than in former years.