ation for extension.
It is likely that Dudley only received a moderate remuneration for his pains, as no one seems to have taken any interest in the business after it was thrown upon the public by the expiration of his patent.
Iron of poor quality continued to be made in districts where wood was scarce, and of good quality from charcoal in places where the forests yet remained.
The demand for iron continuing to grow, — a natural effect of advancing civilization, — iron was exported from Sweden and Russia in large quantities and of excellent quality.
The forests of these countries gave them a natural advantage over England, whose woods had by this time become thinned out, so that the use of wood for iron smelting had been forbidden by act of Parliament in 1581, within twenty-two miles of the metropolis, or fourteen miles of the Thames, and eventually was forbidden altogether.
The art of making iron with pit-coal, and of casting articles of iron, was revived by Abraham Darby, of