BY L. F. GIBLIX, E. L. PIESSE, AND H. R. HUTCHISON. 11 



1913. 



ABSTRACT OF OBSERVATIONS. 



T, a spot on the rock within the '"stockade" at the trigono- 

 metrical station on the southern summit. We did not see 

 any mark of the original station, and its position is some- 

 what uncertain. 



A, the top of a flag at the eastern end of the Stacks Bluff 

 base. 



B, C, D. E. tops of flags at the ends of the bases south of the 

 Nile Gorge. 



L, the base of the cairn erected in 1907 on Mt. Legge. 

 N, S, the highest points visible from B, G, E, of the wastern 

 and eastern summits of Ragged Mountain. 



TA 



(W 

 BC 

 BE 



Lengths of Bases. 



(Reduced .to the horizontal.) 



Measured in 1911, 155442. 155443 feet. 

 Measured in 1912, 15530 feet. 

 Length adopted, 1554 feet. 

 1366-5 feet. 

 1369 feet. 

 1204 feet. 



HORIZONTAL ANGLES OBSERVED. 



Each entry in the columns *" Face Right," "Face Left," 

 is the mean of the vernier-readings at one setting. 



(*) Corrected to make sum of ob.served angles of triangle 180' 



