At last Burr, oblivious to the danger that Eaton might disclose the deadly secrets which he had so imprudently confided to a dissipated stranger, resolved to act and set out on his fateful journey. Before doing so, he sent two copies of a cipher letter to Wilkinson. This was in answer to a letter which Burr had just received from Wilkinson, dated May 13, 1806, the contents of which never have been revealed. Burr chose, as the messenger to carry overland one of the copies, Samuel Swartwout, a youth then twenty-two years of age, and brother of Colonel John Swartwout whom Jefferson had removed from the office of United States Marshal for the District of New York largely because of the Colonel's lifelong friendship for Burr. The other copy was sent by sea to New Orleans by Dr. Justus Erich Bollmann.[836]
No thought had Burr that Wilkinson, his ancient army friend and the arch conspirator of the whole plot, would reveal his dispatch. He and Wilkinson were united too deeply in the adventure for that to be thinkable. Moreover, the imminence of war appeared to make it certain that when the General received Burr's cipher, the two men would be comrades in arms against Spain in a war which, it cannot be too often repeated, it was believed Wilkinson could bring on at any moment.
Nevertheless, Burr and Dayton had misgivings that the timorous General might not attack the Spaniards. They bolstered him up by hopeful letters, appealing to his cupidity, his ambition, his vanity, his fear. Dayton wrote that Jefferson was about to displace him and appoint another head of the army; let Wilkinson, therefore, precipitate hostilities—"You know the rest.... Are you ready? Are your numerous associates ready? Wealth and glory! Louisiana and Mexico!"[837]
In his cipher dispatch to Wilkinson, Burr went to even greater lengths and with reason, for the impatient General had written him another letter, urging him to hurry: "I fancy Miranda has taken the bread out of your mouth; and I shall be ready for the grand expedition before you are."[838] Burr then assured Wilkinson that he was not only ready but on his way, and tried to strengthen the resolution of the shifty General by falsehood. He told of tremendous aid secured in far-off Washington and New York, and intimated that England would help. He was coming himself with money and men, and details were given. Bombastic sentences—entirely unlike any language appearing in Burr's voluminous correspondence and papers—were well chosen for their effect on Wilkinson's vainglorious mind: "The gods invite us to glory and fortune; it remains to be seen whether we deserve the boon.... Burr guarantees the result with his life and honor, with the lives and honor and the fortunes of hundreds, the best blood of our country."[839]
Fatal error! The sending of that dispatch was to give Wilkinson his opportunity to save himself by assuming the disguise of patriotism and of fealty to Jefferson, and, clad in these habiliments, to denounce his associates in the Mexican adventure as traitors to America. Soon, very soon, Wilkinson was to use Burr's letter in a fashion to bring his friend and many honest men to the very edge of execution—a fate from which only the fearlessness and penetrating mind of John Marshall was to save them.
But this black future Burr could not foresee. Certain, as were most men, that war with Spain could not be delayed much longer, and knowing that Wilkinson could precipitate it at any moment, Burr's mind was at rest. At the beginning of August, 1806, he once more journeyed down the Ohio. On the way he stopped at a settlement on the Monongahela, not far from Pittsburgh, where he visited one Colonel George Morgan. This man afterward declared that Burr talked mysteriously—the Administration was contemptible, two hundred men could drive the Government into the Potomac, five hundred could take New York; and, Burr added laughingly, even the Western States could be detached from the Union. Most of this was said "in the presence of a considerable company."[840]
The elder Morgan, who was aged and garrulous,[841] pieced together his inferences from Burr's meaning looks, jocular innuendoes, and mysterious statements,[842] and detected a purpose to divide the Nation. Deeply moved, he laid his deductions before the Chief Justice of Pennsylvania and two other gentlemen from Pittsburgh, a town close at hand; and a letter was written to Jefferson, advising him of the threatened danger.[843]
From Pittsburgh, Burr for the second time landed on the island of Harman Blennerhassett, who was eager for any adventure that would restore his declining fortunes. If war with Spain should, after all, not come to pass, Burr's other plan was the purchase of the enormous Bastrop land grant on the Washita River. Blennerhassett avidly seized upon both projects.[844] From that moment forward, the settlement of this rich and extensive domain in the then untouched and almost unexplored West became the alternative purpose of Aaron Burr in case the desire of his heart, the seizure of Mexico, should fail.[845]
Unfortunately Blennerhassett who, as his friends declared, "had all kinds of sense, except common sense,"[846] now wrote a series of letters for an Ohio country newspaper in answer to the articles appearing in the Kentucky organ of Daveiss and Humphrey Marshall, the Western World. The Irish enthusiast tried to show that a separation of the Western States from "Eastern domination" would be a good thing. These foolish communications were merely repetitions of similar articles then appearing in the Federalist press of New England, and of effusions printed in Southern newspapers a few years before. Nobody, it seems, paid much attention to these vagaries of Blennerhassett. It is possible that Burr knew of them, but proof of this was never adduced. When the explosion came, however, Blennerhassett's maunderings were recalled, and they became another one of those evidences of Burr's guilt which, to the public mind, were "confirmation strong as proofs of holy writ."
Burr and his newly made partner contracted for the building of fifteen boats, to be delivered in four months; and pork, meal, and other provisions were purchased. The island became the center of operations. Soon a few young men from Pittsburgh joined the enterprise, some of them sons of Revolutionary officers, and all of them of undoubted loyalty to the Nation. To each of these one hundred acres of land on the Washita were promised, as part of their compensation for participating in the expedition, the entire purpose of which was not then explained to them.[847]