When the expedition, on its return, had reached the head waters of the Missouri, two of these fearless men, Colter and Potts, decided to remain in the wilderness to hunt beaver. Being well aware of the hostility of the Blackfoot Indians, within whose regions they were, they set their traps at night, and took them up in the first dawn of the day. Early one morning, they were ascending a creek in a canoe, visiting their traps, when they were alarmed by a great noise, like the trampling of animals. They could see nothing, as the perpendicular banks of the river impeded their view. Yet they hoped that the noise was occasioned simply by the rush of a herd of buffaloes.
Their doubts were soon painfully removed. A band of six hundred Blackfoot warriors appeared upon each side of the creek. Escape was hopeless. The Indians beckoned to the hunters to come ashore. Colter turned the head of the canoe towards the bank, and as soon as it touched the land, a burly savage seized the rifle belonging to Potts, and wrenched it from his hand. But Colter, who was a man of extraordinary activity and strength, grasped the rifle, tore it from the hands of the Indian, and handed it back to Potts. Colter stepped ashore and was a captive. Potts, with apparent infatuation, but probably influenced by deliberate thought, pushed again out into the stream. He knew that, as a captive, death by horrible torture awaited him. He preferred to provoke the savages to his instant destruction. An arrow was shot at him, which pierced his body. He took deliberate aim at the Indian who threw it and shot him dead upon the spot. Instantly a shower of arrows whizzed through the air, and he fell a dead man in the bottom of the boat. The earthly troubles of Potts were ended. But fearful were those upon which Colter was about to enter.
The Indians, after some deliberation respecting the manner in which they would put him to death, stripped him entirely naked, and one of the chiefs led him out upon the prairie to the distance of three or four hundred yards from the rest of the band who were grouped together. Colter then perceived that he was to have the dreadful privilege of running for his life;—he, entirely naked and unarmed, to be pursued by six hundred fleet-footed Indians with arrows and javelins, and with their feet and limbs protected from thorns and brambles by moccasins and deerskin leggins.
"Save yourself if you can," said the chief in the Blackfoot language as he set him loose. Colter sprung forward with almost supernatural speed. Instantly the Indian's war-whoop burst from the lips of his six hundred pursuers. They were upon a plain about six miles in breadth abounding with the prickly pear. At the end of the plain there was Jefferson river, a stream but a few rods wide. Every step Colter took, bounding forward with almost the speed of an antelope, his naked feet were torn by the thorns. The physical effort he made was so great that the blood gushed from his nostrils, and flowed profusely down over his chest. He had half crossed the plain before he ventured to glance over his shoulder upon his pursuers, who, with hideous yells, like baying bloodhounds, seemed close upon his heels. Much to his relief he perceived that he had greatly distanced most of the Indians, though one stout savage, with a javelin in his hand, was within a hundred yards of him.
Hope reanimated him. Regardless of lacerated feet and blood, he pressed forward with renovated vigor until he arrived within about a mile of the river, when he found that his pursuer was gaining rapidly upon him. He could hear his breathing and the sound of his footsteps, and expected every moment to feel the sharp javelin piercing his back.
In his desperation he suddenly stopped, turned round and stretching out both of his arms, rushed, in his utter defencelessness, upon the armed warrior. The savage, startled by this unexpected movement and by the bloody appearance of his victim, stumbled and fell, breaking his spear as he attempted to throw it. Colter instantly snatched up the pointed part, and pinned his foe, quivering with convulsions to the earth.
Again he plunged forward on the race for life. The Indians, as they came up, stopped for a moment around the body of their slain comrade, and then, with hideous yells, resumed the pursuit. The stream was fringed with a dense growth of cotton-wood trees. Colter rushed through them, thus concealed from observation, and seeing near by a large raft of drift timber, he plunged into the water, dived under the raft and fortunately succeeded in getting his head above the water between the logs, where smaller wood covered him to the depth of several feet.
Scarcely had he attained this hiding place ere the Indians like so many fiends came rushing down to the river's bank. They searched the cotton-wood thickets, and traversed the raft in all directions. They frequently came so near the hiding place of Colter that he could see them through the chinks. He was terribly afraid that they would set fire to the raft. Night came on, and the Indians disappeared. Colter, in the darkness, dived from under the raft, swam down the river to a considerable distance, and then landed and traveled all night, following the course of the stream.
"Although happy in having escaped from the Indians, his situation was still dreadful. He was completely naked under a burning sun. The soles of his feet were filled with the thorns of the prickly pear. He was hungry and had no means of killing game, although he saw abundance around him; and was at a great distance from the nearest settlement. After some days of sore travel, during which he had no other sustenance than the root known by naturalists under the name of psoralea esculenta, he at length arrived in safety at Lisa Fort, on the Big Horn, a branch of the Yellow Stone river."