The thoat of the green man has the most abominable disposition of any creature I have ever seen, not even the green men themselves excepted. They are constantly fighting among themselves, and woe betide the rider who loses control of his terrible mount; yet, paradoxical as it may appear, they are ridden without bridle or bit; and are controlled solely by telepathic means, which, fortunately for me, I learned many ago while I was prisoner of Lorquas Ptomel, jed of the Tharks, a green Martian horde.

The beast to whose back I had vaulted was a vicious devil, and he took violent exception to me and probably to my odor. He tried to buck me off; and, failing that, reached back with his huge, gaping jaws in an effort to seize me.

There is, I might mention, an auxiliary method of control when these ugly beasts become recalcitrant; and I adopted it in this instance, notwithstanding the fact that I had won grudging approval from the fierce green Tharks by controlling thoats through patience and kindness. I had time for neither now, as my quarry was racing along the broad avenue that led to the ancient quays of Horz and the vast dead sea bottoms beyond; so I laid heavily upon the head and snout of the beast with the flat of my broadsword until I had beaten it into subjection; then it obeyed my telepathic commands, and set out at great speed in pursuit.

It was a very swift thoat, one of the swiftest that I had ever bestrode; and, in addition, it carried much less weight than the beast we sought to overtake; so we closed up rapidly on the escaping green man.

At the very edge of the plateau upon which the old city was built we caught up with him, and there he stopped and wheeled his mount and prepared to give battle. It was then that I began to appreciate the marvelous intelligence of my mount. Almost without direction from me be maneuvered into the correct positions to give me an advantage in this savage duel, and when at last I had achieved a sudden advantage which had almost unseated my rival, my thoat rushed like a mad devil upon the thoat of the green warrior tearing at its throat with his mighty jaws while he tried to beat it to its knees with the weight of his savage assault.

It was then that I gave the coup de grace to my beaten and bloody adversary; and, leaving him where he had fallen, rode back to receive the plaudits and the thanks of my newfound friends.

They were waiting for me, a hundred of them, in what had probably once been a public market place in the ancient city of Horz. They were not smiling. They looked sad. As I dismounted, they crowded around me.

"Did the green man escape?" demanded one whose ornaments and metal proclaimed him a leader.