Forty seconds, the increase would take, at half speed. It might be that long before the giant would waken thoroughly and see what was happening. He, Garth, might start the process, and, when he saw the huge figure stirring and waking from the noise of the dynamo, switch off the ray and get out. No matter how short a time it took Hagendorff to throw off the fogginess of his sleep, he would be somewhat increased in size, and the odds of combat would not be so great. It was a terrible risk. Did he dare take it? He thought of the forest, of the raw night, of what was threatened in the morning.... Yes! Silently, the manikin clasped the nearest table leg, shinnied up and hauled himself over the top. As he got there his heart leaped. A sharp thumping had come from behind. He dropped to his knees and glanced round; but he immediately rose again, reassured. It was only the rabbits in their cage, disturbed by the strange figure on the table. He thanked God that they--and his tarantulas and other insects--could make no alarming noises. Garth found a long strand of wire. The panel's control lever, swung to the left, controlled increase; to the right, decrease. Garth's plan was to wind the middle of the wire around it, relay each end around the two supporting posts of the switchboard, and thus have both ends of the wire in his hands when he stood inside the chamber. One end of the wire would enable him to pull the lever over for increase, and the other to pull it back to neutral when the increase was completed, or when Hagendorff arose. Quickly he started to arrange the wire. Then suddenly his hands dropped and he stared dismayed at the control panel. The power switch had been removed! * * * * * It was Hagendorff's work, of course. He had guarded every angle. Without that switch, the mechanism was lifeless and literally powerless. It worked on a delicately adjusted and enclosed rheostat; there was nothing that could be substituted for it. It would take hours to improvise one in the heart of the apparatus. The switch, Garth reflected bitterly, was probably concealed somewhere about the giant's body. He considered the possibility of tying him. He knew where there was a coil of light, pliable wire on the floor; he might be able to loop it over the giant's hands and legs while he slept, tie him securely, and then go through his pockets for the switch. Another hazard! But there was nothing else to do. Garth lowered himself over the table's edge and slid quietly down the leg. He glanced at the sleeping man, then over across the room to where, beneath another table, the wire was--and his nerves jumped at what he saw there. From the darkness under the table two spots of greenish fire, close to the floor, held steadily on him.