"But there is Solon, the man whom I telegraphed to join us here. I don't expect him before morning." "Why, he is here already! Haven't you met him! He arrived on the evening train, and came in here to inquire where you could be found. I gave him directions, and started him off not fifteen minutes ago." "I don't see how he managed it," said Billy Brackett, who had been thinking rapidly while the other spoke; "but if he is already on board there is no reason why our departure should be delayed. Therefore I am almost inclined to accept your advice, for which, as well as for your timely warning, I am sincerely grateful. I will, at any rate, get back to the raft at once." With this the young man shook hands with the operator, and left the office. "There!" exclaimed the other, looking after him with a relieved sigh; "I believe I have done that young fellow a good turn. At the same time I have given myself a chance to capture the thousand-dollar reward that Ned wrote about, and which I was afraid this chap was after for himself." As for Billy Brackett, the more he reflected upon the situation, as he hastened towards the place where the raft was moored, the more puzzled he became as to what course he ought to pursue. He now had not only Winn, the raft, and himself to consider, but Glen and Binney, and the valuable instruments belonging to General Elting. Certainly it would not do to allow these to fall into the hands of an excited and irresponsible mob. Still, the thought of running away was hateful. As he neared the raft an undefined apprehension caused him to quicken his steps; and at the sound of Binney Gibbs's shout of warning, he broke into a run. Then he heard another shout of "Hol' on, Marse Winn! I comin'!" and the noise of a struggle, in another moment he was in the thick of it. Solon had reached the raft just in time to save Binney, who he thought was Winn, from being dropped overboard by Plater, the "river-trader." The old negro attacked the big man so furiously with tooth and nail that the latter gave the lad in his arms a fling to one side, sending him crashing with stunning force against the "shanty," and devoted his entire attention to this new assailant. He had just stretched Solon on the deck with a vicious blow of his powerful fist, when Billy Brackett appeared and sprang eagerly into the fray. Even Plater's brute strength was no match for the young engineer's science, and the latter would have gained a speedy victory, had not Grimshaw, who had been engaged in casting off the lines that held the raft to the bank, come to his partner's assistance.