This book is a first-hand account of an important military expedition undertaken by a company of engineers in the mid-19th century. The expedition involved a march from Fort Leavenworth, Kansas to Fort Bridger, Utah and back, and was tasked with surveying the territory and assessing its suitability for future settlement. The narrative provides a detailed and engaging account of this challenging and historically significant journey. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.