As neither of the lads was sufficiently expert in "making up" features to change Rob's wide-open eyes into oblique slits, he submitted to the wearing of big, round, shell-rimmed, smoked-glass spectacles, found among the temple properties. Another thing there obtained was an inscribed iron tablet that had hung upon the breast of the rain-god, and to carry this to Pekin was to be the ostensible reason for their journey in that direction. Also the silence with which Rob was to conceal his ignorance of the northern dialect was to be explained as being imposed by a vow not to speak a word, even in prayer, until he had safely deposited that holy tablet in the great Pekin temple of the rain-god. The only bit of property formerly belonging to him that he was allowed to retain was his revolver, which, together with a belt full of cartridges, was concealed beneath his robe.

As their changed plan was to carry them in the very direction Jo had announced his intention of taking before leaving the city, he decided to maintain his character as an officer of imperial troops, escorting the priest, rather than to assume that of a servant, as he at first had proposed. Thus he would be able to ride horseback, carry weapons in plain sight, and disburse money for many comforts that a priest's servant could not obtain.

With these preparations completed, our lads waited impatiently for darkness, and no sooner had it descended than they set forth, exercising great caution in leaving the temple grove, but after that travelling as briskly as Jo could walk. The latter insisted that Rob, being unused to sandals, should ride his pony, while he proceeded on foot until they could beg, borrow, steal, or buy another.

They had gone but a few li, or Chinese miles, each of which equals about one-third of an English mile, when they heard the steady beat of a horse's hoofs, accompanied by a grinding noise as of machinery. After listening until he located the sound as coming from a field at one side of the road, Jo crept softly in that direction. He quickly discovered a horse, attached to a long, wooden beam, travelling in a monotonous circle, and thus lifting an endless chain of earthen jars full of water from a deep well. Each, as it came to the surface, emptied itself into an irrigating ditch, and then went down to be refilled. All this was simple enough, and did not particularly interest Jo, for he had seen hundreds of just such irrigating plants in operation all over the great plain. Heretofore, however, a prominent feature of the outfit had been the man or boy who, armed with a bamboo whip, had kept the horse awake and at work; but here no human figure was to be distinguished. At the same time, there was a sound of blows, delivered at regular intervals, each of which inspired the horse to fresh exertion. Finally, becoming convinced that, in spite of the blows, there was no person in the vicinity, Jo went closer to determine their origin. At the machine he found working a scheme so practical, simple, and ingenious as to arouse his admiration—a section of stiff but springy bamboo, and a stout cord fixed on the beam to which the horse was attached. That was all. Three revolutions of the beam wound up the cord and sprung back the bamboo. At the beginning of the fourth revolution the cord suddenly was slackened, and the liberated bamboo struck the horse a blow across the hind quarters. Nor did these blows always descend at the same point of the circle or at regular intervals, since their frequency depended upon the speed of the horse, who, being blindfolded, was thus made to believe that he was at the mercy of some constantly alert though invisible person.

So impressed was Jo with the ingenuity of this contrivance that he went back to persuade Rob to come and see it. The latter did so, though somewhat unwillingly, not caring to waste time over Chinese inventions just then; but when he had approached close enough to the horse to discern its markings, he exclaimed: "Hello! That's my pony! The very one I was riding yesterday when the rain-dancers got after me. And here he is, being made to work all night by an infernal machine. I never heard of anything so disgusting. Here! whoa, you beast! You have done the tread-mill act long enough, and now we'll put you to a better service."

Thus it happened that the very ingenuity of this inventor of perpetual motion, by which he gained a few hours of sleep, also caused him a heavy loss; for, had he been on hand, Jo would have bought the horse from him at his own price, while Rob would not have appeared on the scene at all.

As no saddle could be found near the tread-mill, Jo was forced to ride bareback until they reached a town where one could be purchased. At this same town they slept a few hours, during which their horses also rested and were liberally fed on beans and chopped bamboo grass. Our young travellers were again on the road by sunrise, and after this they pushed ahead with all speed for the greater part of a week, riding early and late, but taking long rests in the middle of each day.

Although as a priest and an officer of imperial troops they were suffered to pass, without delay, many points at which any other class of travellers would have been detained for rigorous examination, they met with ever-increasing evidences of trouble as they advanced northward. Everywhere they came across dead bodies, ruined buildings, and occasionally whole villages swept by fire. Everywhere people gazed on them with suspicion or fled at their coming. They heard of the great Boxer army gathering near Pekin, and encountered numerous small bodies of armed men hastening to swell its ranks. Also they came into constant contact with prowling bands of starving peasantry. Several times, in order to escape from the latter, our lads joined themselves to one or another of the Boxer companies, and remained with it until the immediate danger was passed. Then, on the plea of urgent haste, they would push ahead.

Finally, when thus travelling with a company who would have hacked them to bits had they discovered their identity, they crossed the Hu-Tho-ho (the river that goes where it pleases) and approached the walled city of Cheng-Ting-Fu. In this city stands a Roman Catholic cathedral, built of stone, and having a massive square tower that looms like a great fortress above the low roofs of the surrounding temples and native dwellings.

In this stronghold were many foreign refugees, priests, nuns, and Belgian engineers who had been engaged on the railway running south from Pekin; also several American missionaries who, wounded and plundered of everything, had gained this asylum barely in time to save their lives.