In rehearsal, this act had been done to perfection; but the first time Don Blossom heard the storm of cheers, yells, and laughter, with which his appearance was greeted by a genuine river audience, he became so terrified, that without waiting to be driven from the stage he fled from it. Darting behind the scenes and on through the living-room, he finally took refuge in the darkest corner of the engine-room, where Reward was drowsily working his treadmill. The monkey was so frightened that a moment later, when Sabella went to find him, he sprang away from her, and with a prodigious leap landed squarely on Reward's head, where, chattering and screaming, he clung desperately to the long ears. [Illustration: "With a prodigious leap he landed squarely on Reward's head."] The next instant a frantic mule was performing the almost impossible feat of running away on a treadmill. At the same time, to Billy Brackett's dismay and to the astonishment of his audience, the several pictures of the panorama were flitting by in a bewildering stream of color, the effect of which was kaleidoscopic and amazing. This was Don Blossom's first and last appearance on the stage in public, for he was so thoroughly frightened that, after being rescued from his unhappy position, nothing could induce him to enter either the exhibition hall or the engine-room again. An hour later he managed to evade the watchfulness of his young mistress, slip from the boat, and scamper away through the darkness. His absence was not discovered until the next morning, and at first it was supposed that he was in hiding somewhere on board. When a thorough search failed to produce the little rascal, all except Sabella declared he would never be found, and they must proceed down the river without him. Against this decision the little girl, who had become deeply attached to her pet, protested so earnestly that Cap'n Cod finally agreed to devote an hour to searching the town and making inquiries for the lost monkey. In order to make the search as thorough as possible, he, Billy Brackett, Winn, and Solon went ashore and started in different directions, leaving Sabella alone on the _Whatnot_. CHAPTER XXIV. WINN DISCOVERS HIS LONG-LOST RAFT.