"But none of these correspond with More's description of the monster that fought with the galley." "No," said the doctor, "I am coming to that now. That monster could have been no other than the Plesiosaurus, one of the most wonderful animals that has ever existed. Imagine a thing with the head of a lizard, the teeth of a crocodile, the neck of a swan, the trunk and tail of a quadruped, and the fins of a whale. Imagine a whale with its head and neck consisting of a serpent, with the strength of the former and the malignant fury of the latter, and then you will have the plesiosaurus. It was an aquatic animal, yet it had to remain near or on the surface of the water, while its long, serpent-like neck enabled it to reach its prey above or below with swift, far-reaching darts. Yet it had no armor, and could not have been at all a match for the ichthyosaurus. More's account shows, however, that it was a fearful enemy for man to encounter." "He seems to have been less formidable than that beast which they encountered in the swamp. Have you any idea what that was?" "I think it can have been no other than the Iguanodon," said the doctor. "The remains of this animal show that it must have been the most gigantic of all primeval saurians. Judging from existing remains its length was not less than sixty feet, and larger ones may have existed. It stood high on its legs; the hind ones were larger than the fore. The feet were massive and armed with tremendous claws. It lived on the land and fed on herbage. It had a horny, spiky ridge all along its back. Its tail was nearly as long as its body. Its head was short, its jaws enormous, furnished with teeth of a very elaborate structure, and on its muzzle it carried a curved horn. Such a beast as this might well have caused all that destruction of life on the part of his desperate assailants of which More speaks. "Then there was another animal," continued the doctor, who was evidently discoursing upon a favorite topic. "It was the one that came suddenly upon More while he was resting with Almah after his flight with the run-away bird. That I take to be the Megalosaurus. This animal was a monster of tremendous size and strength. Cuvier thought that it might have been seventy feet in length. It was carnivorous, and therefore more ferocious than the iguanodon, and more ready to attack. Its head was like that of a crocodile, its body massive like that of an elephant, yet larger; its tail was small, and it stood high on its legs, so that it could run with great speed. It was not covered with bony armor, but had probably a hide thick enough to serve the purpose of shell or bone. Its teeth were constructed so as to cut with their edges, and the movement of the jaws produced the combined effect of knife and saw, while their inward curve rendered impossible the escape of prey that had once been caught. It probably frequented the river banks, where it fed upon reptiles of smaller size which inhabited the same places.