Children's Stories in American HistoryAges and ages after this, grass and trees began to ap pear, and at last great forests covered the land, and over the fields and through the woods gigantic animals rovedstrange and terrible looking beasts, larger than any animal now living, and very fierce and strong. Among these were the mammoth and mastodon, which were so strong and ferocious that it would take hundreds of men to hunt and kill them. These great animals would go trampling through the