APPENDIX. 



tions of adjuftment being obferved, the angle to C came 

 out 65° 15' ; lefs by one minute than it fhould have been. 

 I then took from the fame place the angle to the moun- 

 tain (E) 275° i'; more by one minute than the corre- 

 fponding angle at the oppofite ftation (B) : but the errors 

 correding each other, the whole angle C D £ = 150° 14'= 

 the whole angle C B E. 

 By the triangle ABC, AC comes out 1771,4 feet : 

 By the triangle ABE, AE comes out 9265,0 feet: 

 Therefore the diflance CEis - 11036,4 feet. 

 Angle of the mountain's elevation feen from C 7° 44' s 

 Height of the mountain above C - 1498,8 feets 

 4- height of C above the water's edge 5 : 



Height of the mountain above the water's edge 1503,8 feet. 

 I prefer this obfervation to the others, becaufe the three 

 angles of the triangle ABC came out exa£tly 180 degrees 

 by the obfervation. The diftance A C found by the com- 

 putation, differed only four feet from that by the meafure; 

 but, the ground being uneven, I did not depend upon the 

 meafure, but took it merely as a check upon the operation, 

 to detedt an error, in cafe of any great difference. 

 The diftance found by the fimilar triangles 

 BCE and CDE comes out - 11037 ^^^i 



The angle of the mountain's elevation feen 



from A was - - B"* 50'; 



Hence the height of the mountain above 



A was found > - . 1439,8 feet: 



Deprefllon of C feen from A was i" 54'; 



Z a Hence 



151 



