After spending a week or more at Nashville, Burr descended in one of General Jackson’s boats to the mouth of the Cumberland, where his ark was waiting; and June 6 he joined General Wilkinson at Fort Massac,--a military post on the north shore of the Ohio River, a few miles above its junction with the Mississippi. The two men remained together at Massac four days, and Burr wrote to his daughter, Mrs. Allston: “The General and his officers fitted me out with an elegant barge,--sails, colors, and ten oars,--with a sergeant and ten able, faithful hands. Thus equipped, I left Massac on the 10th June.” Wilkinson supplied him also with a letter of introduction to Daniel Clark, the richest and most prominent American in New Orleans. Dated June 9, 1805, it announced that the bearer would carry secrets. “To him I refer you for many things improper to letter, and which he will not say to any other.” While Burr went down the river to New Orleans, Wilkinson turned northward to St. Louis, where he arrived July 2. He was in high spirits and indiscreet. Two of his subordinate officers, Major Hunt and Major Bruff, afterward told how he sounded them,--and Major Bruff’s evidence left no doubt that Wilkinson shared in the ideas of Burr and Dayton; that he looked forward to a period of anarchy and confusion in the Eastern States, as the result of democracy; and that he intended to set up a military empire in Louisiana. Already, June 24, he signed Lieutenant Pike’s instructions to explore the headwaters of the Arkansas River. Adair, certainly in the secret, believed the object of this expedition to be the opening of a road to Santa Fé and to the mines of Mexico.[153] Every recorded letter or expression of Wilkinson during the spring and summer of 1805 showed that he was in the confidence of Burr and Dayton; that he gave them active aid in their scheme for severing the Union; and that they in their turn embraced his project of Mexican conquest.