d30 



GEOLOGICAL SURVEY OF THE TEERITOKIES. 



In taking the mean of the elevations of La Plata Mountain, a double 

 weight has been given to the result from the barometrical observation 

 taken on this mountain, as it does not depend on vertical angles. 



The small range of results on La Plata Mountain (only 18 feet) demon- 

 strates the excellence of the Mount Lincoln base, and the importance of 

 having the base as nearly as possible at the same elevation as the points 

 measured. 



From these points as bases the following heights have been measured, 

 each result being the mean of a number of vertical angles taken with 

 weights inversely proi)ortional to the distances : 



Elevfiticm. 

 Feet. 



Massive Mountain (highest summit) 14,298 



Mount Elbert (northern and highest summit) 14, 351 



Mount Yale 14,187 



Station 75 13,294 



Elk Mountains. 





Relative ele- 

 vation. 



Elevation of 

 barometer. 



Elevation of 

 Snowmass 

 Mountain. 



Mean eleva- 

 tion. 





Feet. 



0' 

 +145 



—1,918 

 — CI3 

 —620 



Feet. 

 13, 961 

 14, 106 

 12,014 

 13, 423 

 13, 284 



Feet. 

 13, 961 

 13, 961 

 13, 932 

 14, 036 

 13, 904 



Feet. 

 13 970 



Castle Peak 



14 115 





12, 052 



13, 357 

 13, 350 





Italiau Peak 





As before, double weight was given to the direct barometrical result 

 on the common point, in this case Snowmass Mountain. The resulting 

 elevations show much greater range than in the Sawatch system, as 

 might be expected from the greater distance from the base, the great 

 range in elevation, over 2,000 feet, and the fact that the great Sawatch 

 range lies between these mountains and Mount Lincoln. 



From these peaks as bases, the following elevations have been meas- 

 ured by vertical angles, each result being, as before, the mean of several 

 independent measurements, giving suitable weights : 



ELK MOTJNTAINS. 



EASTERN RANGE 



Capitol Monntain 



Maroon Mountain 



Mount Daly 



Pyramid Peak 



Sopris Peak 



Teocalli Monntain 



Station 63 



Park Cone 



Snowmass Mountain 



Castle Peak 



White Eock Mountain 



Italian Peak 



Beilcvue Monntain 



Between forks of Castle Creek . 

 Do 



Latitude. 



Longitude. 



O / ,1 



o / // 



39 9 



107 4 40 



39 4 30 



106 59 20 



39 11 



107 4 



39 5 



106 57 



39 15 54 



107 9 50 



38 57 40 



106 53 



38 54 



106 30 



38 48 



106 36 



39 7 12 



107 3 44 



39 30 



106 38 40 



38 58 30 



106 55 10 



38 56 35 



106 45 



39 1 



107 1 



39 12 



107 4 



39 13 



107 2 



39 2 



107 2 



39 2 



107 



39 



106 52 



39 8 



106 52 



39 4 



106 51 



39 5 



106 51 



39 6 



106 48 



Elevation. 



Feet. 



13, 997 



14, 003 

 1.3, 193 

 13, 885 

 12, 823 

 13, 113 

 12, 484 



12, 021 



13, 970 

 14,115 

 13, 357 

 13, 350 

 12, 350 



12, 050 

 12, 000 

 12, 240 



13, 050 

 13, 400 

 12, 180 

 12, 990 

 12, 780 

 11,230 



