Written by eminent geologist and glaciologist Louis Agassiz, this 1850 book made public the scientific report of the 1848 expedition to explore Lake Superior, including geological and zoological details. The book also includes a 'narrative' of the journey written by the artist James Elliot Cabot.

First published in 1850, this book contains the scientific report of Louis Agassiz's exploratory expedition to Lake Superior in 1848.