34 



CARPMAEL AXl) McLEOD ON THE 



TABLE II. — Continued. 

 Observation's of August 31, 1883, Montkeal. 



Normal equations : 



= +27.224rf« -33.028i/c 



= +24.038(/a' +28.515rfc 



= -33.028rfti +28.515rfa' 



= + 4.500rf« + 4.620(/ci' 



+ 4.500./( - 1.102 



+ 4.620f// - 0.060 



+139.228f/c + 8.350f/( -0.273 



+ 8.350(/c- +30.000A +0.070 



Whence da = +.071, da' = -.025, dc = +.024, 



oil this night a - +.500, a' = +.800, <• = .000, 



Whence total azimuth before reversal 



after 



Collimatioii (Lamp East) 



dt = -.009, weight of rf( 



( = -Om. 30.94 sec. 



27.307 



(■ 



ek error 

 ami probable error 



= (I + da = +.571 



= «'+ du'= +.775 



= c + dc = +.024 



- I + dt = -Oni. 30.949 sec. 



= ± .020 sec. 



