three hundred yards; the bank of the river sloping, and not more than three feet high, so that there was no possible mode of concealment.  Captain Lewis, therefore, thought of retreating with a quick walk, as fast as the bear advanced, towards the nearest tree; but, as soon as he turned, the bear rushed open-mouthed, and at full speed, upon him.  Captain Lewis ran about eighty yards, but finding that the animal gained on him fast, it flashed on his mind that, by getting into the water to such a depth that the bear would be obliged to attack him swimming, there was still some chance of his life; he therefore turned short, plunged into the river about waist-deep, and facing about presented the point of his espontoon.  The bear arrived at the water’s edge within twenty feet of him; but as soon as he put himself in this posture of defence, the bear seemed frightened, and wheeling about, retreated with as much precipitation as he had pursued.  Very glad to be released from this danger, Captain Lewis returned to the shore, and observed him run with great speed, sometimes looking back as if he expected to be pursued, till he reached the woods.  He could not conceive the cause of the sudden alarm of the bear, but congratulated himself on his escape when he saw his own track torn to pieces by the furious animal, and learned from the whole adventure never to suffer his rifle to be a moment unloaded.”

Captain Lewis now resumed his progress towards the western, or Sun, River, then more commonly known among the Indians as Medicine River.  In going through the lowlands of this stream, he met an animal which he thought was a wolf, but which was more likely a wolverine, or carcajou.  The journal says:—­

“It proved to be some brownish yellow animal, standing near its burrow, which, when he came nigh, crouched, and seemed as if about to spring on him.  Captain Lewis fired, and the beast disappeared in its burrow.  From the track, and the general appearance of the animal, he supposed it to be of the tiger kind.  He then went on; but, as if the beasts of the forest had conspired against him, three buffalo bulls, which were feeding with a large herd at the distance of half a mile, left their companions, and ran at full speed towards him.  He turned round, and, unwilling to give up the field, advanced to meet them:  when they were within a hundred yards they stopped, looked at him for some time, and then retreated as they came.  He now pursued his route in the dark, reflecting on the strange adventures and sights of the day, which crowded on his mind so rapidly, that he should have been inclined to believe it all enchantment if the thorns of the prickly pear, piercing his feet, had not dispelled at every moment the illusion.  He at last reached the party, who had been very anxious for his safety, and who had already decided on the route which each should take in the morning to look for him.  Being much fatigued, he supped, and slept well during the night.”