ITINERARY. Vll 



very unusual value lay not so much in his great strength 

 and endurance, as in the fact that he would do exactly as 

 told. 



Throughout the field work constant reference was made 

 to the very useful and minutely exact topographical maps 

 lately issued by the Geological Survey, as well as to those 

 of the Hayden Survey. Mention should also be made of 

 the very interesting and valuable though not wholly cor- 

 rect map in the Biennial Report of the Forest Commissioner 

 of the State of Colorado for the years 1887 and 1888. 



