There was a pause for a time; then one boy asked, "Didn't they burn just what we burn?" After another pause the shy little girl asked, "Didn't they have more forests then than now?" Before the teacher could reply, a boy said, "Perhaps they did not have any coal." The children had thus thought it out for themselves, and they were right. Miss Turner then told them that it was many years after the time of Columbus or Hudson or Penn before coal mines were discovered in this country or coal used. She added that almost all the country, from Maine to Georgia and westward across the Alleghany Mountains, was covered with thick forests when the colonists crossed the Atlantic Ocean. "What do you suppose our ancestors thought of these forests? Were they glad to see them, or did they wish that they covered less ground?" asked the teacher. Most of the children answered that the forests must have been of great value to the colonists; they would not have to pay anything for fuel. "Can you raise vegetables or grain in the woods?" was Miss Turner's next question. Then the pupils began to see that the forests were hindrances as well as helps. The teacher told them that they gave the colonists more wood than was needed for fires and for lumber. She added that every acre of ground that they wished to plant with Indian corn or rye, with potatoes or squashes, must first be freed from the trees. Before the land could be plowed it must be cleared. If, then, the trees furnished more wood than could be used, it was natural for the farmer to burn the trees and stumps in the fields. If there had been but few settlers and if they had been widely scattered over a large territory, no harm would have resulted. But the colonists came over by the thousands and had large families of children. By the time the country had been settled a hundred years, great gaps had been made in the forests. A few of the most foresighted of the colonists began to think about the future and to wonder what they would do for fuel if the wood should give out. In fact, trees began to be scarce in the neighborhood of the larger towns, and firewood as well as lumber became expensive. "Suppose that all the forests in this country had been destroyed," the class was asked, "what would the people have done for fuel?" "Used coal," replied a boy from a back seat. "Yes," said Miss Turner, "if there were any coal, and if the colonists knew where to find it and how to use it. But what is this coal and where does it come from?"