What increased the irritation of Messrs. Crooks and M’Lellan, at this mortifying check to their gainful enterprise, was the information that a rival trader was at the bottom of it; the Sioux, it is said, having been instigated to this outrage by Mr. Manuel Lisa, the leading partner and agent of the Missouri Fur Company, already mentioned.  This intelligence, whether true or false, so roused the fiery temper of M’Lellan, that he swore, if ever he fell in with Lisa in the Indian country, he would shoot him on the spot; a mode of redress perfectly in unison with the character of the man, and the code of honor prevalent beyond the frontier.

If Crooks and M’Lellan had been exasperated by the insolent conduct of the Sioux Tetons, and the loss which it had occasioned, those freebooters had been no less indignant at being outwitted by the white men, and disappointed of their anticipated gains, and it was apprehended they would be particularly hostile against the present expedition, when they should learn that these gentlemen were engaged in it.

All these causes of uneasiness were concealed as much as possible from the Canadian voyageurs, lest they should become intimidated; it was impossible, however, to prevent the rumors brought by the Indians from leaking out, and they became subjects of gossiping and exaggeration.  The chief of the Omahas, too, on returning from a hunting excursion, reported that two men had been killed some distance above, by a band of Sioux.  This added to the fears that already began to be excited.  The voyageurs pictured to themselves bands of fierce warriors stationed along each bank of the river, by whom they would be exposed to be shot down in their boats:  or lurking hordes, who would set on them at night, and massacre them in their encampments.  Some lost heart, and proposed to return, rather than fight their way, and, in a manner, run the gauntlet through the country of these piratical marauders.  In fact, three men deserted while at this village.  Luckily, their place was supplied by three others who happened to be there, and who were prevailed on to join the expedition by promises of liberal pay, and by being fitted out and equipped in complete style.

The irresolution and discontent visible among some of his people, arising at times almost to mutiny, and the occasional desertions which took place while thus among friendly tribes, and within reach of the frontiers, added greatly to the anxieties of Mr. Hunt, and rendered him eager to press forward and leave a hostile tract behind him, so that it would be as perilous to return as to keep on, and no one would dare to desert.

Accordingly, on the 15th of May he departed from the village of the Omahas, and set forward towards the country of the formidable Sioux Tetons.  For the first five days they had a fair and fresh breeze, and the boats made good progress.  The wind then came ahead, and the river beginning to rise, and to increase in rapidity, betokened the commencement of the annual flood, caused by the melting of the snow on the Rocky Mountains, and the vernal rains of the upper prairies.