Its interests were economically insignificant until the beginning of the 18th century when the rich deposits of copper and tin began to be vigorously worked at Dolcoath.
Economically, Besi is the most important island.
In the eastern half of the country the system consists of shales and sandstones chiefly, btit there is some limestone, and coal enough to be of great importance economically, though it makes but a small part of the system quantitatively.
Economically and administratively on the landlords, or should be transformed into a class of independent communal proprietors.
When heat is required, it is sometimes supplied by means of fermenting dung, or dung and leaves, or tanner's bark, but it is much more economically provided by hot-water pipes.