LONGITUDE OF McGILL OBSEEVATORY. 



159 



June 19, 1883. 



Normal Equations. 

 Assume : a7' = +6.'500 ; C(, = -Ô'iôO ; «„ = -6'050. 



&AT : 



= +0.0000 -O.OiSSSAT 

 +6.018; S.- = -l'uni ; Sa = -0.019. 



With weights. L. K. only. 



-0.038 

 -0.052 

 -0.037 



- 



+7.005!( 

 -G.915<r 

 +1.57S(e 



- G.Ol Se 



+21G15t- 

 + 7.47SC 



+1.575Ar 

 ~7.475Ar 



+B.205Ar 



-O.OOlO -0 0318SAr 



SaT = -0 063; 5c = +0.044; 5(t = +0.062. 



Solution for 5'- = 0. 



Witiiout weight.-*. L. E. only. 

 ■ - -0.01 1 +2.4275Ar 



SVr = +0.005; 5f - aOOO; 5(( = -o'oo-i. 



With weights L K, only. 



= -0.010 +3.7285Ù7' 



5 A 7' = +0^005; 5'- = Ô.OOO ; 5« = +0.004. 



Jlne 20, 1883. 



Fundamental Equation.s. 



Lamp 

 West. 



- l'i.l 

 + 18.8 

 + 649 

 + 78.1 

 + 78.1 

 + 66.9 L.C. 



Without wcîght<f. 



-0.0.02 

 -0.020 

 +0.135 

 -0 085 

 -0.075 

 -0.045 



+0.ÎJ65U 

 +0.488« 

 -0.705« 

 -2.615H 

 -2.635" 

 +2.355« 



+1.0G5C +5Ar 

 +1.055C +5Ar 

 +2.3G5C. +5 AT 

 +4.855C +5Ar 

 +4.875C +5 A 7' 

 -2.055c +5Ar 



= 



-0.051 

 -0.028 

 +0.004 

 -0.034 

 -0.030 

 -0-022 



With weights. 



+1..545(i +1.708C +1.605A7' 



+0.675<i +1.475r- +1.405A7' 



-0..5.55(( +1.G55C +0.705Ar 



-1.04S« +1.94SO +0.405Ar 



-1.055« +1.95SC +0.405A7' 



+1.185n -1.285c +0.505Ar 



XoRMAL Equations. 



s. .f. s. 



Assume : A 7"„ = +6.405 ; Cj = +0.050 ; oj = -0.540. 



Without weights. L W. only. 



= 



5A7' 



rO.lfiô +21 02Sr( 

 -0..398 -31.805-1 

 -0.122 - 2.245a 



-31.805O - 2.245Ar 

 +61..535C +11.645Ar 

 +11.045C + O.OOSAr 



= +0.0013 -0.0056SAr 



: +0.014 ; 8c = +Ô.003 ; Sk = -6.002. 



5Ar 



- -0.0005 -O.OISISAT 

 -6'038 ; Se - +6!027 ; Sn - +0.044. 



Solution for 5c = 0. 



5Ar 



Without weights, h. W. only, 

 = -0.047 +2.572îAr 



+0.018 ; Se - 6.000 ; 5»/ ~ -O.'OOG. 



SAT : 



With weights. L. W. only. 

 = -0.017 +1.600SAr 



+6.011 ; 5c = 6.000; 5" = +6.012. 



