I read that the expedition shot a bear but didn't kill it making the men jump off a cliff into the water to get away from the bear that was on a rampage? I can't recall where I read this?
Everything they said about grizzlies as quoted in DeVoto’s book:
MONDAY APRIL 29TH 1805 [Lewis]
I walked on shore with one man. about 8. A.M. we fell in with two brown or yellow bear; both of which we wounded; one of them made his escape, the other after my firing on him pursued me seventy or eighty yards, but fortunately had been so badly wounded that he was unable to pursue me so closely as to prevent my charging my gun; we again repeated our fir and killed him. … the Indians may well fear this anamal equiped as they generally are with their bows and arrows or indifferent fuzees, but in the hands of skillfull riflemen they are by no means as formidable or dangerous as they have been represented.
FIFTH OF MAY SUNDAY 1805
The river rising & current Strong & in the evening we saw a Brown or Grisley beare on a sand beech, I went out with one man Geo Drewyer & Killed the bear, which was verry large and a turrible looking animal, which we found very hard to kill we Shot ten Balls into him before we killed him, & 5 of those Balls through his lights
MONDAY MAY 6TH 1805 [Lewis]
saw a brown bear swim the river above us, he disappeared before we can get in reach of him; I find that the curiossity of our party is pretty well satisfyed with rispect to this anamal
TUESDAY MAY 14TH 1805
one of the party wounded a brown bear very badly, but being alone did not think proper to pursue him. In the evening, the men in two of the rear canoes discovered a large brown bear lying in the open grounds about 300 pieces from the river, and six of them went out to attack him, all good hunters; they took the advantage of a small eminence which concealed them and got within 40 paces of him unperceived, two of them reserved their fires, as had been previously conscerted, the four others fired nearly at the same time and put each his bullet through him, two of the balls passed through the bulk of both lobes of his lungs, in an instant this monster ran at them with open mouth, the two who had reserved their firs, discharged their pieces at him as he came towards them, boath of them struck him, one only slightly and the other fortunately broke his shoulder, this, however, only retarded his motion for a moment only, the men unable to reload their guns took to flight, the bear pursued and had very nearly overtaken them before they reached the river; two of the party betook themselves to a canoe, and the others seperated an concealed themselves among the willows, reloaded their pieces, each discharged his piece at him as they had an opportunity they struck him several times again but the guns served only to direct the bear to them in this manner he pursued two of them seperately so close that they were obliged to throw aside their guns and pouches and throw themselves into the river, altho’ the bank was nearly twenty feet perpendicular; so enraged was this anamal that he plunged into the river only a few feet behind the second man he had compelled take refuge in the water when one of those who still remained on shore shot him through the head and finally killed him; they then took him on shore and butched him when they found eight balls had passed through him in different directions
FRIDAY JUNE 14TH 1805 [Lewis]
I selected a fat buffaloe and shot him very well, through the lungs; while I was gazeing attentively on the poor anamal discharging blood in streams from his mouth and nostrils, expecting him to fall every instant, and having entirely forgotten to reload my rifle, a large white or reather brown bear, had perceived and crept on me within 20 steps before I discovered him; in the first moment I drew up my gun to shoot, but at the same instant recolected that she was not loaded and that he was too near for me to hope to perform this opperation before he reached me, as he was then briskly advancing on me; it was an open level plain, not a bush within miles nor a tree within less than three hundred yards of me; the riverbank was sloping and not more than three feet above the level of the water; in short, there was no place by means of which I could conceal myself from this monster untill I could charge my rifle; in this situation I thought of retreating in a brisk walk as fast as he was advancing untill I could reach a tree about 300 yards below me, but I had no sooner terned myself about but he pitched at me, open mouth and full speed, I ran about 80 yards and found he gained on me fast, I then run into the water the idea struk me to get into the water to such debth that I could stand and he would be obliged to swim, and that I could in that situation defend myself with my espontoon; accordingly, I ran haistily into the water about waist deep, and faced about and presented the point of my espontoon, at this instant he arrived at the edge of the water within about 20 feet of me; the moment I put myself in this attitude of defence, he suddenly wheeled about as if frightened, declined to combat on such unequal grounds, and retreated with quite as great precipitation as he had just before pursued me.
As soon as I saw him run in that manner I returned to the shore and charged my gun, which I had still retained in my hand throughout this curious adventure, I saw him run through the level open plain about three miles till he disappeared in the woods on medecine river