The professor was disconcerted. The danger of the experiment consisted in the possibility that the archer, instead of aiming at the rosette, would select an eye or some part of the head for a mark, in which case the result would be fatal. He was quite willing to incur the risk himself, trusting that the archer’s vanity would impel him to aim at the right spot; but he had never contemplated the turn which affairs had now taken.

Lethbridge, however, with a languid smile and a shrug of the shoulders, rose to his feet, and, nonchalantly flicking the ash off the end of his cigar, waited for the professor to affix the rosette.

A happy inspiration just then occurred to von Schalckenberg. “It is a very small mark,” he murmured confidentially to M’Bongwele; “I do not believe you can hit it. Shall I get something larger?”

The king would not listen to any such proposal; he was evidently anxious to exhibit his skill; and the professor, reassured, attached the rosette to Lethbridge’s coat in the exact spot indicated, M’Bongwele and his companions watching the operation with the keenest interest.

The colonel, glancing round for a good background against which to place himself, noticed a large clump of trees with olive-green foliage growing at a short distance directly astern of the ship. Against these his white-clad figure would stand out in strong relief. He accordingly stepped leisurely out to a suitable position on the deck, and, with one hand in his pocket and his smouldering cigar in the other, patiently awaited the decisive moment. M’Bongwele in the meantime snatched a bow from one of his followers, and, selecting a long straight arrow from the sheaf, retired to the other end of the deck, a distance of about one hundred and fifty feet from his living target. He strung the bow carefully, adjusted the arrow to the string with the utmost nicety, drew it to the head, and then paused for a full minute, apparently waiting for some indication of flinching on Lethbridge’s part. In this, however, he was disappointed, not the faintest suggestion of uneasiness could be detected in the colonel’s face—indeed, he seemed to be absorbed in a critical contemplation of the smoke which lazily wreathed upward from the end of the cigar. Suddenly the bow twanged loudly, the arrow whizzed through the air, and, striking fair upon the rosette, fell in splinters to the deck. Lethbridge somewhat contemptuously kicked the fragments aside, unpinned the rosette from the breast of his coat, and sauntered back to his former seat. The group of chiefs gathered on the deck glanced at each other and uttered suppressed ejaculations of dismay. As for M’Bongwele, he was thoroughly discomfited; he had been shrewd enough to suspect in the professor’s proposal some preconcerted arrangement, which he flattered himself he had skilfully baffled; instead of which his ruse had simply redounded to his own more complete confusion.

The professor rose and picked up the pierced rosette, which he handed to the king.

“You are very skilful,” he remarked, pointing to the puncture; “I compliment you.” Then, changing his tone, he continued: “We have allowed you to do this in order that you may be thoroughly convinced of the impossibility of injuring us. Now you shall have a further example of our power. Order your warriors to dismount and try their best to lift this ship from off the ground.”

The king turned to Lualamba and gave him the necessary order; whereupon the chief, descending the ladder to the ground, advanced to the troops, and, dismounting them, assembled them all round the hull; then, at a given signal, the entire body exerted themselves to the utmost to lift the immense fabric from the ground—of course without effect, as her chambers were full of air.

“Now,” said the professor when the savages had pretty well exhausted themselves, “let all but one man retire.”

This was done, Mildmay meanwhile exhausting the chambers until the gauge showed that the ship weighed only a few pounds. The professor glanced carelessly at the pilot-house, caught the signal that all was in readiness, and said to the king: