"What can they be for?"

"I know not," replied Claudius.

"I suppose they are intended," said the child, "to compel the Sejan horse to keep his head straight. Thus your volunteer-substitute need not fear the beast's teeth. The issue seems then to be reduced to a trial of sheer horsemanship."

"And in such a trial, most honored sir," replied the slave, "I begin to have hopes. You should see the youth. The leading-reins are now loose. The muzzle is snatched away, and the contest has begun. Surely it seems one between a wild beast and a demigod."

"Is he thrown?"

"No; yes; so help me! he is off, but is off standing."

"Explain; proceed—I tell you, proceed!"

"The horse, after a series of violent plunges, suddenly reared till he had nearly gained a perpendicular position upon his hind-legs, the fore-feet pawing the air. The rider, who seemed to be as little liable to fall as though he had been part of the animal, then quickly passed his right foot out of the far stapeda, and dropping the bridle from his teeth, slipped down on the hither side. Hark! did you hear the crash with which the fore-paws have come down? The steed seemed to be very near falling backward, but after a struggle of two or three seconds, recovered himself; the centre of his weight had not been carried rearward of the vertical line; and, O ye gods! just as you heard that ponderous thud with which he descended upon his fore-feet, the youth darted from the ground with a spring like his first, and he is now on the brute's back as before. He stoops to the horse's neck; he has caught the bridle in his teeth, and lifts that brave, clear face again. Listen to the multitude! Oh! how the euge, euge, thunders from a hundred thousand sympathetic voices!"

"Ah my sight!" cried the child Caligula.

"Ha! ha!" continued Claudius, transported out of himself. "I shall get my liberty to-day! Nor will my benefactor be injured. Ha! ha! The fell beast of a horse seems astonished. How he writhes his back, curving it like some monstrous catamount. And lo! now he leaps from the ground with all four feet at the same time! I never saw the like, except in animals of the cervine tribe. Ha! ha! leap away! Yes, stoop that ferocious-looking head, and shake it; and lash out with your death-dealing hoofs. Your master is upon you, in his chair of power, and you'll shake your head off before you dislodge him from it. It is not with the poor literary slave Claudius that you have to deal! Oh! what a paroxysm of plunges. I was frightened for you, then, brave young knight; but there you sit yet, calm and clear-faced. If I was frightened for you, you are not frightened for yourself."