TABLE OF CONTEITS. 



LETTER OF TRANSMITTAL ... 



INTRODUCTION. 



History of the explorations within the Great Basin from the time of Father Eecalante, in lTTC, to the present 

 period, and a general description of the country 



REPORT AND JOURNAL 



APPENDIXES A, B, AND C. 



A. Itinerary of Capt. J. H. Simpson's outward or more northern route from Camp Floyd to Genoa, in Carson Valley. 



B. Itinerary of Capt. J. H. Simpson's return or more southern route from Genoa to Camp Floyd 



C. Itinerary of Capt. J. H. Simpson's route, via White Clay Creek and Tim pa nogoa C an on, from Fort Bridger to 



Camp Floyd 



APPENDIX D. 



Astronomical observations and table of geographical positions of the^most itnportantpoiuts of Capt. J. H. Simpson's 

 routes, prefaced by a discussion of the subject 



APPENDIX E. 



Barometrical profiles of routes, prefaced by a discussion of the subject and of the climate, with the necessary 

 tables and five diagrams, by Henry Engelmann, meteorologist of the expedition 



Table of dista 



APPENDIX G. 



Estimates of appropriations required to improve the routes 



APPENDIX H. 



Magnetic dip, declination, and intensity at various points of Capt. J. H. Simpson's routes, prefaced by a discus- 

 sion of the subject, with a plat and the necessary tables 



APPENDIX H H. 



Railroad-routes from the Atlantic to the Pacific Ocean 



APPENDIX I. 



Geological report of country from Fort Leavenworth to the Sierra Nevada, by Henry Eugelmann, geologist of the 



expedition * • 



APPENDLX J. 

 Paleontological report of the same country, by Mr. F. B. Meek 



