"Never mind; try again," thought he, after the first sensation of disgust had passed off, and a glance at the shore showed him that there were no witnesses. "Of course, I forgot one hand must go over the other. It might have happened to anyone. Let me see, which hand shall I keep uppermost; the left, that's the weakest." And away he went again, keeping his newly-acquired fact painfully in mind, and so avoiding further collision amidships for four or five strokes. But, as in other sciences, the giving of undue prominence to one fact brings others inexorably on the head of the student to avenge his neglect of them, so it happened with Tom in his practical study of the science of rowing that by thinking of his hands he forgot his seat, and the necessity of trimming properly. Whereupon the old tub began to rock fearfully, and the next moment, he missed the water altogether with his right scull, and subsided backwards, not without struggles, into the bottom of the boat; while the half stroke which he had pulled with his left hand sent her head well into the bank. Tom picked himself up, and settled himself on his bench again, a sadder and wiser man, as the truth began to dawn upon him that pulling, especially sculling, does not, like reading and writing, come by nature. However, he addressed himself manfully to his task; savage indeed, and longing to drive a hole in the bottom of the old tub, but as resolved as ever to get to Sandford and back before hall time, or perish in the attempt. He shoved himself off the bank, and warned by his last mishap, got out into mid stream, and there, moderating his ardor, and contenting himself with a slow and steady stroke, was progressing satisfactorily, and beginning to recover his temper, when a loud shout startled him; and, looking over his shoulder at the imminent risk of an upset, he beheld the fast sailor the Dart, close hauled on a wind, and almost aboard of him. Utterly ignorant of what was the right thing to do, he held on his course, and passed close under the bows of the miniature cutter, the steersman having jammed his helm hard down, shaking her in the wind, to prevent running over the skiff, and solacing himself with pouring maledictions on Tom and his craft, in which the man who had hold of the sheets, and the third, who was lounging in the bows, heartily joined. Tom was out of ear-shot before he had collected vituperation enough to hurl back at them, and was, moreover, already in the difficult navigation of the Gut, where, notwithstanding all his efforts, he again ran aground; but, with this exception, he arrived without other mishap at Iffley, where he lay on his sculls with much satisfaction, and shouted, "Lock--lock!"