Ned Newton sighted his machine gun. Tom had showed him how to work it, and indeed the young bank clerk had had some practice with a weapon like this, erected on a stationary tripod. But this was the first time Ned had attempted to fire from the tank while it was moving, and he found it an altogether different matter. "Say, it sure is hard to aim where you want to!" he shouted across to Tom, it being necessary, even in the conning tower, where this one gun was mounted, to speak loudly to make one's self heard above the hum, the roar and rattle of the machinery in the interior of Tank A, and below and to the rear of the two young men. "Well, that's part of the game," Tom answered. "I'm sending her along over as smooth ground as I can pick out, but it's rough at best. Still this is nothing to what you'll get in Flanders." "If I get there!" exclaimed Ned grimly. "Well, here goes!" and once more he tried to aim the machine gun at the middle of the brick wall of the ruined factory. A moment later there was a rattle and a roar as the quick-firing mechanism started, and a veritable hail of bullets swept out at the masonry. Tom and Ned could see where they struck, knocking off bits of stone, brick and cement. "Sweep it, Ned! Sweep it!" cried Tom. "Imagine a crowd of Germans are charging out at you, and sweep 'em out of the way!" Obeying this command, the young man moved the barrel of the machine gun from side to side and slightly up and down. The effect was at once apparent. The wall showed spatter-marks of the bullets over a wider area, and had a body of Teutons been before the factory, or even inside it, many of them would have been accounted for, since there were several holes in the wall through which Ned's bullets sped, carrying potential death with them. "That's better!" shouted Tom. "That'll do the business! Now I'm going to open her up, Ned!" "Open her up?" cried the young bank clerk, as he ceased firing. "Yes; crack the wall of that factory as I would a nut! Watch me take it on high--that is, if the old tank doesn't go back on me!" "You mean you're going to ride right over that building, Tom?" "I mean I'm going to try! If Tank A does as I expect her to, she'll butt into that wall, crush it down by force and weight, and then waddle over the ruins. Watch!" Tom sent some signals to the motor room. At once there was noticed an increase in the vibrations of the ponderous machine. "They're giving her more speed," said Tom. "And I guess we'll need it." Straight for the old factory went Tank A. In spite of its ruined condition, some of the walls were still firm, and seemed to offer a big obstacle to even so powerful an engine of war as this monstrous tank.