Jack had been marching with his Mannlicher held on top of the pony's pack, and his Mauser pistol held up in the other hand, hoping to keep the weapons dry. Now he seized the opportunity of pouring a stream of heavy Mauser bullets into the open jaws.

So swiftly did he press the trigger that he drove five shots in before the alligator once more snapped its jaws close. The great saurian was badly wounded, and in its rage and agony began to lash the water furiously with its huge tail, while blood and foam poured out at its jaws and nostrils. The deadly, ripping, soft-nosed bullets, which would have glanced off its hide of mail, had torn their way down its throat and through the soft parts of the body with fearful destructive power, inflicting mortal wounds. At sound of the pistol shots so close to its ear, the pony leapt forward more frantically still, and the huge dying brute was left floundering in the water.

"One done for," roared Jim in delight. "Peg away, boys. We may come safe yet."

The words were scarcely out of his mouth when Buck let out a yell of alarm.

"Say," cried Buck, "there's one here. He's got hold of the pony."

Buck's words were drowned by the loud shrill squeal of affright from the pony, whose off-hind leg had been seized by the second of the vast brutes to attack the party.

"Here's another," shouted Jack, and he and Jim, who had been also holding his pistol above the stream, fired rapidly. The third alligator was sailing straight upon them down stream, floating on the surface, his evil, unwinking eyes fixed full on the pony which he was about to attack. Jim planted a lucky shot in one of the wicked-looking eyes and knocked it clean out of its socket. Jack plainly saw the bleeding hole before the alligator threw up his huge tail, slapped the water with a crack like thunder, and dived.

In the meantime Buck was engaged in a terrible struggle with the alligator which had seized the pony. He held the bridle of the unlucky beast, and assisted it as much as possible in the strong fight it made for its life. So desperately did the powerful little animal struggle with its terrible foe that it actually gained a dozen yards or more, dragging the huge reptile along the river-bed. But the immensely powerful jaws, fanged with strong, sharp teeth, never loosed their grip.

Jim now turned to Buck's assistance. At that instant the alligator rolled in the water, showing its softer underside. It rose towards the surface, yet never easing its grip, and lashed the river into foam with its powerful tail as it tugged backwards with tremendous force, aiming to pull the pony into the deeper water. For a moment Jim saw its underside near the surface, the four horrible legs armed with huge claws striking out savagely in the water.

He thrust his rifle into the stream, pressing the muzzle against the saurian's body. Luckily the magazine still remained above water, and he fired several shots in swift succession into the vast brute, the water boiling and swirling as the gases of the discharge came to the surface in huge bubbles. One of these shots must have reached a vital part; the alligator gave a final convulsive shudder, its jaws ground savagely together, then they gaped wide, and the pony was free.