Then mamma told how all this ground was once covered with just such beautiful woods as they had passed through, and how they were set on fire by the sparks from a train of cars, how the fire spread for miles and miles, and burned for many days; and the people could do nothing to stop it, until God sent a change of wind and a heavy rain which put it out. She told them how many poor people were burnt out of their houses, and how the little birds and squirrels and other animals were driven from their cosy homes in the woods, and many of them scorched to death by this terrible fire. Then for a long time the ground where these woods had grown was only covered with ashes and charred logs, till at last these tangled bushes had sprung up. Mamma said she supposed that by and by the people would cut down the underbrush, and then the young trees would have space to grow.