Strange creatures riot here in these primal ages. The young land, hot and moist,--moist with the unevaporated water of the depositing rivers, and hot with the influence of the submarine volcano which is lifting it, as well as with the beams of the tropical sun,--brings forth from its steaming bosom, the most gigantic trees in the most profuse luxuriance. And animal life teems too, in this riant vegetation. Millions of insects,--ants, and termites, and beetles,--are busy at work upon the trunks of the great trees, eating them down, and swarming in their immense populous nests, beyond all imaginings. Surely they will soon eat up the entire forest, dense and rapid as it grows, and there will be nothing left but cities of insects. No fear! See those great waddling beasts[4] with stout short legs, and enormous hoof-like claws so bent inward that the creatures are obliged to walk on the edge of their paws,--they are equally busy with the insects, tearing apart with their powerful claws the earthy nests as fast as they are built, and devouring the makers themselves by wholesale. Here is a wonderful creature, a vast armadillo, with a body as big as a rhinoceros, covered with a convex oval shield, formed of hexagonal plates accurately fitted to each other. See how he approaches a fallen tree, which his unerring instinct tells him is perforated through and through, and filled with the swarming millions of ants; with his powerful jaws he munches up the entire mass; the thin and papery partitions of the dusty wood are ground to powder, and the ants are licked in and chewed into a black pulp between those curious cylinders of teeth.