Read it through once

'The Mississippi! It was with indescribable emotions that I first felt myself afloat upon its waters. How often in my schoolboy dreams, and in my waking visions afterwards, had my imagination pictured to itself the lordly stream, rolling with tumultuous current through the boundless region to which it has given its name, and gathering into itself, in its course to the ocean, the tributary waters of almost every latitude in the temperate zone! Here it was then in its reality, and I, at length, steaming against its tide. I looked upon it with that reverence with which everyone must regard a great feature of external nature.'