ASTRONOMY AND BAEOMETKIC HYPSOMETEY. 549 



Observations made at Signal Station, Cheyenne, July 25, 1875, lat. 41° 08'. 

 Observer, A. C. Dobbins, U. S. A. 



:andard bar. 133. 



7.00 a. in. 



24.270 Att.th. 



= 61.0 



Ex. th. 58.0 





10.19 



24.256 



= 63.0 



62.0 





12.00 m. 



24.260 



= 69.0 



65.0 



educed to 32°. 



24.262 = h 









{ 61.6 = t 







From Guyot's tables we have 



j 59.3 = V 











[ 120.9 =t+t> 







Table I for h 24.262 inches = 23,156.7 

 W 23.168 inches = 21,951.2 



Difference = D = 1,205.5 = approx. cliff, level. 

 D X (* + f--64) =+ 76>2 



900 



D' = 1,281.7 = second approx. diff. 

 Table III for D' gives + .1 



Table IV for D' gives + 3.0 



Table. V for h = 24.26 + .7 



1,282.5 Harney Peak above Cheyenne. 

 6,085.9 Cheyenne above the level of the sea. 



Feet 7,369.4 Harney Peak above the level of the sea. 



HEIGHT OF TERRY PEAK. 



Observations made on the summit of Terry Peal<, lat. 44° 20', August 20, 1875. 



Observer, Henry Newton. 



Bar. 2120 9.30 a. in. 

 10.00 

 11.00 

 3.00 p. m. 



h' 



in. 

 23.404 

 23.408 

 23.420 

 23.448 



Att. 



th. 



o 



= 58.5 

 = 58.5 

 = 60.5 

 = 67.5 



61.2 



Ex. 



o 



th. = 56.0 



58.0 



62.0 



61.0 



Means 



Corrected to standard 



Eeduced to 32° 



23.420 

 + .006 

 -.068 



t' = 59.2 





= 23.358 





