"What are they?" he asked Tom.
"Electric rifles. One of my inventions," and Tom showed how the weapon worked. Those of you who have read the volume entitled, "Tom Swift and His Electric Rifle" will remember this curious weapon. It was worked by a stored charge of magnetism of the wireless kind. By this a concentrated globule of electricity was projected from the muzzle, and it could be made strong or weak at the will of the marksman. It could be made so powerful that it would totally annihilate a whale, as Tom had once proved, or it could be made so mild that it would put an enemy, or several of them, to sleep almost as gently as some narcotic, and they would awaken after several hours, little the worse for their experience.
A charge of electricity as powerful as five thousand volts could be concentrated into a small wireless globule the size of a bullet, and this would fly through space, or even through solid objects until, reaching the limit of the range set, would strike the object aimed at. With his wonderful electric rifle Tom had not only killed elephants, and other big game, but fought off the red pygmies of Africa.
"And we may have a use for it in South Amer-
