in the night, to beg, curry favour, or carry reports, yet five of these secret spies were always kept in pay by M'Kenzie to watch the motions of the Indians, and through them he knew every move in the hostile camp.
At this time one of the spies reported that the {224} Indians had plotted together to starve M'Kenzie into terms, or drive him off altogether. M'Kenzie, on his part, had recourse to a stratagem to bring them to terms. Both were on the alert. When the whites had nothing to eat, the articles usually paid for a horse were tied up in a bundle; that done, M'Kenzie, with ten or twelve of his men, would sally forth with their rifles to the grazing grounds of the horses, shoot the fattest they could find, and carry off the flesh to their camp; leaving the price stuck upon a pole alongside the head of the dead horse.
This manœuvre succeeded several times, and annoyed the Indians very much; some of them lost their best horses by it. Then it was that they combined to attack the whites in their camp. This news was brought M'Kenzie by one of his hired spies, and was confirmed by the fact of an Indian offering to sell a horse for powder and ball only. From various other suspicious circumstances, there remained but little doubt in the minds of the whites but that there was some dark design in agitation. In this critical conjuncture, M'Kenzie again eluded their grasp by ensconcing himself and his party in an island in the middle of the river. There they remained, in a manner blockaded by the Indians; but not so closely watched but that they appeared every now and then with their long rifles among the Shahaptain horses; so that the Indians grew tired of their predatory excursions, and therefore sent a messenger to M'Kenzie. A parley ensued between the main land {225} and the island; the result of which was, that the Indians agreed to sell horses
