Supported by this theory, conscious that in some way he did not understand he had been wronged, and urged on by White Cloud, the prophet, who ruled a Winnebago village on the Rock River, Black Hawk crossed the Mississippi in 1831, determined to evict the settlers. A military demonstration drove him back, and he was persuaded to sign a treaty never to return east of the Mississippi. "I touched the goose quill to the treaty, and was determined to live in peace," he wrote afterward; but hardly had he "touched the goose quill" before his heart smote him. Longing for his home; resentment at the whites; obstinacy; brooding over the bad counsels of White Cloud and his disciple Neapope, an agitating Indian who had recently been East to visit the British and their Indian allies, and who assured Black Hawk that the Winnebagoes, Ottawas, Chippewas, and Pottawottomies would join him in a struggle for his land, and that the British would send him "guns, ammunition, provisions, and clothing early in the spring"--all persuaded the Hawk that he would be successful if he made an effort to drive out the whites. In spite of the persuasion of many of his friends and of the Indian agent in the country, he crossed the river on April 6, 1832, and with some five hundred braves, his squaws and children, marched to the Prophet's town, thirty-five miles up the Rock River. As soon as they heard of Black Hawk's invasion, the settlers fled in a panic to the forts in the vicinity, and they rained petitions for protection on Governor Reynolds. General Atkinson, who commanded a company at Fort Armstrong, wrote the governor he must have help; and accordingly on the 16th of April Governor Reynolds sent out "influential messengers" with a sonorous summons. It was one of these messengers riding into New Salem who put an end to Lincoln's canvassing for the legislature, freed him from Offutt's expiring grocery, and led him to enlist. [Illustration: ELIJAH ILES, CAPTAIN OF COMPANY IN WHICH LINCOLN SERVED AS PRIVATE IN BLACK HAWK WAR. From a photograph made for this Magazine.