The history of coal-mining in the seventeenth century covers what may be termed the first chapter in the great story of English coal. In less than a century a seemingly insignificant and experimental industry developed into one of considerable importance. Coal had been used locally before this period; but an industry, as such, did not arise till a decline in the country's supply of wood stimulated new activities. It is possible that the introduction of coal might have been indefinitely postponed, had not years of ruthless felling of timber and neglect of forest lands, coincident with an increasing demand for wood for other than domestic purposes, caused a shortage of fuel. To the Elizabethan the decay of woods had an even wider significance. The demands of the Navy, the extension of the Empire and the discovery of new countries all laid a claim on timber. Its preservation became a matter of national concern. That the individual consumer should have possessed this degree of circumspection, and acted accordingly, was hardly to be expected; but the national needs were brought home to him through an increase in the price of wood. The use of coal became a matter of necessity rather than of choice.