"Hurry!"

It seemed a long distance away--that faint reply to his hail.

"That you, Tad!"

"Y-e-s."

"Where are you!"

"Here."

"Where? I don't see you."

"In the river. Just below the bend."

Hurriedly dismounting and making a quick examination of the banks he discovered that they were so nearly straight up and down that it would be impossible to get his companions out at that point.

"I can't get you out here. You'll have to wait a few moments. Are you swimming?"

"No, I am holding to a rock. It's awful slippery and I'm freezing too."

"All right. Is Stacy with you?"

"Yes, I've got him."

"Good! Have courage! I'll be with you," said Ned encouragingly.

"You'll have to hurry. I can't hold on much longer. The falls are just below here and if I have to let go it's all up with us."

Ned had no need to be told that. He could almost feel the spray from the falls on his face, so close were they to him and their roar was loud in his ears, so that he was obliged to raise his voice in calling to his companions.

Leaping to the back of Bad-eye, Ned was off like a shot, tearing through the brush, headed toward camp. On the way he pa.s.sed Professor Zepplin and Walter, nearly running them down in his mad haste.

"Got a rope?" he shouted in pa.s.sing. "No," answered Walter. "Then get one and hurry around the bend. You'll be needed there in a minute. I'm going down into the stream from the camp."

The Professor, seeming to comprehend what Ned had in mind, turned and ran back to the camp.

Without an instant's hesitation, Ned Rector, upon reaching their camping place, put his pony at the bank where the two boys had gone over.

The little animal refused to take it. He bucked and the lad had a narrow escape from following where Tad and Chunky had gone a short time before.

"I've got to have a saddle. That's the only way I can stick on to drive him in, and we'll need it to hold to as well," he decided.

Every moment was precious now. Whirling the animal about, Ned drove him into the thicket where the saddles lay folded against trees.

It was the work of seconds for him to leap off and throw the heavy saddle on Bad-eye's back. The boy worked with the speed and precision of a Gattling gun. Yet he groaned hopelessly when he realized that his delay might mean the death of two of his companions.

Professor Zepplin arrived at the camp just as Ned had finally cinched the girths and swung himself into the saddle.

"Where--where is he?" gasped the Professor, now breathing hard.

"Below the bend. Get back there with a rope and be ready to toss it to him if he lets go."

Ned and his pony crashed through the brush. He had no spur with which to urge on the animal, but Ned had thoughtfully picked up a long, stout stick, and once more they drove straight at the high bank.

"Stop! I forbid it!" thundered the Professor.

Ned paid no more attention to him than had he not spoken. It was a time when words were useless. What was necessary was action and quick action at that.

"Hurry with that rope!" commanded Ned.

The pony slowed up as they approached the bank of the river, but Ned was in no mood for trifling now. He brought down the stick on the animal's hip with a terrific whack.

Bad-eye angered by the blow, squealed and leaped into the air with all four feet free of the ground.

"Hi-yi!" exclaimed the Pony Rider sharply, again smiting the animal while the latter was still in the air.

Ned's plan was to enter the stream at that point and swim down with the pony until they should have reached the boys and rescued them from their perilous position. While the bluff was sandy at the point where they had fallen in, down below, where Tad was now desperately clinging to the rock, the stream wound through a rocky cut, whose high sides were slippery and uncertain, especially in the darkness of the night.

Bad-eye needed no further goading to force him to do his master's bidding. With another squeal of protest the little animal plunged for the bank. No sooner had his forward feet reached over the edge of it than the treacherous sands gave way beneath them.

The pony pivoted on its head, landing violently on its back. Ned had dismounted without the least effort on his part, so that he was well out of the way when his mount landed. He had been hurled from the saddle the instant the pony's feet struck the unresisting sand.

But Ned clung doggedly to the bridle reins. He, too, struck on his back. He heard the squealing, kicking pony floundering down upon him, its every effort to right itself forcing it further and further down the slippery bank. Now on its back, now with its nose in the sand, Bad-eye was rapidly nearing the swiftly moving creek. Ned had all he could do to keep out of the way, and on account of the darkness he had to be guided more by instinct than by any other sense. However, it was not difficult to keep track of the now thoroughly frightened animal.

Ned leaped to one side. An instant later, and he would have been caught under the pony.

The animal hit the water with a mighty splash, with Ned still clinging to the reins. As the pony went in, Ned was jerked in also, striking the water head first.

He could have screamed from the shock of the icy water, which seemed to smite him like a heavy blow.

For a moment boy and pony floundered about in the stream. It seemed almost a miracle that the lad was not killed by those flying hoofs that were beating the water almost into a froth.

As soon as he was able to get to the surface Ned exerted all his strength to swim out further toward the middle of the stream. Even when he was under water, he still kept a firm grip on the rein. To let go would be to lose all that he had gained after so much danger in getting as far as he had.

By this time, both boy and pony had drifted down stream several rods.

The pony righted himself and struck out for the bank. Ned was by his side almost instantly, being aided in the effort to get there by having the reins to pull himself in by.

Bad-eye refused instinctively to head down stream. There was only one thing to do. That was to climb into the saddle and get him started. Ned did this with difficulty. His weight made the pony sink at first, the animal whinnying with fear.

Fearing to drown the broncho, the boy slipped off, at the same time taking a firm grip on the lines.

Bad-eye came to the surface at once. Ned's right hand was on the pommel, the reins bunched in his left. He brought his knee sharply against the animal's side.

"Whoop!" he urged, again driving the knee against the pony's ribs.

Under the strong guiding hand of his master, the animal fighting every inch of the way, began swimming down stream.