GEOLOGICAL SURVEY OF THE TEERITOEIES. 



95 



Distance from 

 Henry's Lake. 



Distance from 

 Coriune. 



Henry's Lake 



Tygliee Pass 



Gibbon's Fork 



Lower Geyser Basin 



Upper Geyser Basin 



Divide 



Shoshone Geyser Basin 



Lewis Lake 



Hot Springs, Yellowstone Lake 

 Yellowstone Falls 







10 

 33 

 40 



48 

 58 

 62 

 72 

 80 

 110 



235 

 245 

 268 

 275 

 283 

 293 

 297 

 307 

 315 

 345 



Elevation. 



6,443 



7, 063 

 6,808 

 7, 260 

 7,390 



8,717 

 7,881 

 7, 835 

 7,788 

 7,700 



A distance of six miies may be saved by running from divide directly 

 to the outlet of Yellowstone Lake. By a comparison of the two tables 

 of distances an opinion may be formed as to the best route. Both are 

 within a short distance of rivers which never run dry, and both run 

 over thickly-timbered lands. In all the high regions of that country 

 there is but little soil and, therefore, excavation-; are mostly rendered 

 very expensive by being in rock. However, this is a disadvantage per- 

 taining equally to both routes and, therefore, favoring the shorter dis- 

 tance. All the trappers throughout the whole region state, concerning 

 the climate during the wintei', that, although there is heavy snow, it is 

 rarely accompanij^d by winds, so that drifts are rare exceptions. This 

 win also apply equally to both routes and the maintenance of railroads 

 generally. 



Hoping sincerely that the above will furnish an incentive toward 

 opening this grand and wonderful park to the multitudes, both at home 

 and abroad, that are ever anxiously seeking instruction and pleasure, I 

 remain, vours respectfully, 



E. HEPJXG. 



Professor F. V. Hayden, 



United States Geologist. 



