Since this chapter is introductory and intended merely to clear the ground for what follows, I shall close it with an account of the most wonderful ride in the history of the West. It took place in 1851, and the hero was F. X. Aubrey, who made a wager of $1,000 that he would ride alone from Santa Fè, New Mexico, to Independence, Missouri, in six days. The distance is not quite 800 miles.