HE situation was indeed a strange one. Here was our hero, in full possession of all his powers, suspended in mid-air, and seemingly absolutely powerless to budge a single inch in any direction; for it is one of the first laws in physics that a body cannot be set in motion without the action of some force, and no force is possible without some point of resistance against which to act.

"Well, here's a pretty state of thing's!" exclaimed William, dolefully. "Dr. Giles must have overlooked the fact that I'm to be kept prisoner up here. It's no earthly use my trying to reach the bottom of the car, because I have no means whatever of moving from this spot. If there were