"You mention a difficulty," Lantin replied, "but it could be overcome, Wheeler. As you say, no man has ever seen an electron, but for all that, men have done some strange things with electrons. They have shot them through films of water-vapor and have thus been able to record their speeds and courses, without seeing the actual electrons. And just recently, an American scientist was able to change the course of electronic motion entirely, and shoot a stream of electrons in any direction at will, the so-called cathode rays. When that has been done, it doesn't seem altogether impossible to change their motion in another way, by accelerating or reversing it." "But there's another thing, Lantin," I said; "even though you achieved the impossible and found a way of time-traveling, how would you find Cannell? How could you find him, without knowing what age or what place the Raider has taken him to? It seems like hunting for a needle in a haystack, a thousand times magnified in difficulty." Without answering, Lantin went to a cabinet and brought forth a big globe, which he placed on the table before me. "I have a theory on that, too," he said. "Note the lines I've drawn on this globe," he added, indicating some long black pencil-lines that had been drawn on the round surface in the region of the Pacific Ocean. "Cannell was seized at Angkor, as we know, and he was dropped in the open Pacific at a point a few hundred miles east of Manila. I have marked that point with a dot here, for Cannell learned the latitude and longitude of the spot and jotted it down. Now is it not reasonable to suppose that when the Raider dropped Cannell, through the pain or surprize of his shot, it was progressing in a straight line toward its own base, or home, or lair? Of course, it was moving through time also, but in space it was probably heading straight toward its home. So if we draw a straight line from Angkor to this dot, on the globe, and then continue that line straight across the globe, it's reasonable to assume that somewhere along that continued line is the Raider's home. "Now, you heard Cannell say that when the thing came to the ship and fled away with the two sailors it seized, it was heading due north when it vanished from sight. So from this dot west of Panama, representing the ship's position, I have drawn another line straight north. You see, the same reasoning applies here, for the thing would again head straight toward its lair with its victims. The two lines cross each other, as you see, in southern Illinois. And if my theory is correct, somewhere near that point of crossing is the Raider's home, though in what age I do not know. So if one could find the secret of time-traveling, and speed into the future, hovering near that spot, there is a chance that you would find the Raider--and his victims. It is a long chance, of course, but the only one."