“‘Wig-a-more! wig-a-more!’ as the Scotch country folks say,” shouted Joe, in high glee. “Gee-up! gee-up there!”

The huge animal now broke into a very rapid gallop. He flung his trunk from side to side, and his monstrous bounds gave the car several rather heavy thumps. Meanwhile the doctor stood ready, hatchet in hand, to cut the rope, should need arise.

“But,” said he, “we shall not give up our anchor until the last moment.”

This drive, with an elephant for the team, lasted about an hour and a half; yet the animal did not seem in the least fatigued. These immense creatures can go over a great deal of ground, and, from one day to another, are found at enormous distances from where they were last seen, like the whales, whose mass and speed they rival.

“In fact,” said Joe, “it’s a whale that we have harpooned; and we’re only doing just what whalemen do when out fishing.”

But a change in the nature of the ground compelled the doctor to vary his style of locomotion. A dense grove of calmadores was descried on the horizon, about three miles away, on the north of the prairie. So it became necessary to detach the balloon from its draught-animal at last.

Kennedy was intrusted with the job of bringing the elephant to a halt. He drew his rifle to his shoulder, but his position was not favorable to a successful shot; so that the first ball fired flattened itself on the animal’s skull, as it would have done against an iron plate. The creature did not seem in the least troubled by it; but, at the sound of the discharge, he had increased his speed, and now was going as fast as a horse at full gallop.

“The deuce!” ejaculated Kennedy.

“What a solid head!” commented Joe.

“We’ll try some conical balls behind the shoulder-joint,” said Kennedy, reloading his rifle with care. In another moment he fired.