About 1802, there was great excitement in the country west of the Alleghany Mountains, in consequence of a violation of the treaty made with Spain in 1795, by the governor of Louisiana in closing the port of New Orleans against American commerce. There was a proposition before congress for taking forcible possession of that region, when it was ascertained that, by a secret treaty, Spain had retroceded Louisiana to France. The United States immediately began negotiations for the purchase of that domain from France. Robert R. Livingston, the American minister at the court of the First Consul, found very little difficulty in making a bargain with Bonaparte, for the latter wanted money and desired to injure England. He sold that magnificent domain, stretching from the Gulf of Mexico northward to the present State of Minnesota, and from the Mississippi westward to the Pacific Ocean, for fifteen million dollars. The bargain was made in the spring of 1803, and in the fall the country, and the new domain, which added nine hundred thousand square miles to our territory, was taken possession of by the United States. When the bargain was closed, Bonaparte said: "This accession of territory strengthens forever the power of the United States, and I have just given to England a maritime rival that will sooner or later humble her pride." It was the prevailing opinion in the country, that the Spanish inhabitants, who were forming states in the great valley, would not submit to the rule of American government. Aaron Burr, a wily and unscrupulous politician, who, having murdered the noble Hamilton in a duel, was an outcast from society, began scheming for setting up a separate government in the West. Burr was unscrupulous and dishonest and at the same time shrewd. The full extent of his plans were really never known, and the historian is in doubt whether he intended a severance of the Union, or an invasion of Mexico. Herman Blennerhassett, an excellent Irish gentleman, became his ally and suffered ruin with Burr. Burr was arrested and tried, but was found not guilty. His speech in his own defence was so eloquent, that it is said to have melted his enemies to tears, though all believed him guilty. Burr's life was a wreck after that. His fame was blasted, and he was placed beside Benedict Arnold as a traitor to his country. With the acquisition of Louisiana, there grew up a powerful opposition to Jefferson in the North and East. The idea was disseminated that the purchase was only a scheme to strengthen the south and the southern democracy. Mr. Jefferson came almost to having a wholesome dose of his doctrine of State sovereignty exemplified. A convention of Federalists was called at Boston, in 1804, in which a proposition of secession was made. Fortunately, however, there was too much patriotism in the body for the proposition to carry, and the government was saved. CHAPTER IV. BRITISH CRUISERS.