This book is a semi-autobiographical account of the author's experiences as a steamboat pilot on the Mississippi River before the American Civil War. It provides a detailed and humorous depiction of life and society along the river, including the author's own journey from an eager young apprentice to a seasoned riverboat pilot. The book also includes a travelogue of a journey down the Mississippi River much later in life, offering a look at the dramatic changes brought about by industrialization and the Civil War.