Time will not permit me to go into the details. When the immigrants of 1843 were thus coming along the Columbia River, some helpless and almost hopeless, there was a plot by the Indians to massacre these Americans. It was prevented by Dr. McLoughlin. The effect of such a massacre would have been tremendous. It would have, probably, prevented the further settlement of Oregon for years. Had the United States sent troops to punish the Indians in the disputed Oregon Country, it would have almost certainly precipitated a war with Great Britain. In presenting the McLoughlin Document to the Oregon Pioneer Society, in 1880, Col. J. W. Nesmith said: "I had intended reading it to you as a part of my address, but, having already trespassed too long upon your patience, I shall hand the document to the secretary of the Society, with my endorsement of the truth of all its statements that came within my own knowledge.... I desire to say, what I believe all old pioneers will agree to, that the statements of this paper furnished a ... complete vindication of Dr. McLoughlin's acts and conduct, and that the integrity of his narrative cannot be impeached by any honest testimony." In the McLoughlin Document Dr. McLoughlin says: "In 1843, about 800 immigrants arrived from the States. I saw by the looks of the Indians that they were excited, and I watched them. As the first stragglers were arriving at Vancouver in canoes, and I was standing on the bank, nearer the water there was a group of ten or twelve Indians. One of them bawled out to his companions, 'It is good for us to kill these Bostons [Americans].' Struck with the excitement I had seen in the countenances of the Indians since they had heard the report of the immigration coming, I felt certain they were inclined to mischief, and that he spoke thus loud as a feeler to sound me, and take their measures accordingly. I immediately rushed on them with my cane, calling out at the same time, 'Who is the dog that says it is a good thing to kill the Bostons?' The fellow, trembling, excused himself, 'I spoke without meaning harm, but The Dalles Indians say so.' 'Well,' said I, 'The Dalles Indians are dogs for saying so, and you also,' and left him, as, if I had remained longer it would have had a bad effect. I had done enough to convince them I would not allow them to do wrong to the immigrants with impunity. From this Indian saying, in the way he did, that The Dalles Indians said it was good to kill the Bostons, I felt it my duty to do all I could to avert so horrid a deed.