LONGITUDE OF McGILL OBSERVATOEY. 



119 



Table III. — Observations of June 2nd, 1883, Montreal. 



îfame of Stiir. 



Transît over 

 Mean Wire. 



Bb 



Equations of Condition. 



LAMP WEST. 



'' \*irginis - 



; Ily.lrn; - 



" Virsinis - 



'^ \'irginis - 



^ Virgiuis - 



f Ursa; Maj. 



lir. 2001 - - 



40 Cassiop. - 



" Draconis - 



i UrsiB Min. 



36 il. Cassiop. 



16.95 

 56.06 

 22.85 

 52.77 

 45.60 

 18.04 

 28. 75 

 29 01 

 26.65 

 31.82 

 03.77 



56.27 

 36.77 

 04.63 

 42. 44 

 23. 67 

 .5485 

 11.38 

 12. .S2 

 15.77 

 22.09 

 57.26 



— 0.09 



— .0() 



- .07 



- .06 



- .14 



- .31 



— .35 

 + .17 



■)■! 



— .42 

 + .18 



0.77<fa 

 l.mia 

 0.84(fa 

 0.»S<la 

 ô'da 



— o.aitfa 



— 1.5S*t 

 + 2.93f/a 



— 0.79(to 



— 2.61(/a 

 + 2.91da 



+ 1.00(?c + lit + 



+ l.OSdf + lit + 



+ 1.02* + (// + 



+ l.Olrfn + .// + 



+ 1.02r/c + (It + 



+ 1.82</c + dl + 



+ :i Aille + lit — 



— 3.32(li- + lit — 



.13 = 

 .13 = 

 .13 = 



= 



= 



= 



= 



= 



+ 2.36</c + dt — .31 = 

 + 4.85</6. + r/( — .22 = 

 — 3.29rfc + d( _ .32 = 



L.\MI* E.\.ST. 



.04 

 .03 

 .04 

 .02 

 .03 

 .02 

 .04 

 .12 

 .24 

 .06 

 .20 



24 53 

 9 33 

 12 39 



14 31 

 52 23 

 27 47 

 f2 14 

 100 54 

 105 02 

 68 49 

 72 12 



12 29 



12 06 



12 44 



12 24 



12 42 



12 56 



12 12 



12 17 



12 .38 



12 52 



12 58 



32.. 53 

 .54. £5 

 10.46 

 0230 

 27.76 

 3091 

 4843 

 .58.02 

 42.63 

 17.07 

 3932 



53.32 

 1099 

 33.33 

 21.85 

 50.38 

 ■55.79 

 05.08 

 17.30 

 05.30 

 41. Ô4 

 04.78 



— 0.05 



— .16 



— .14 



- .16 



— .26 



- .16 

 -1.13 

 + 0..52 

 + .32 



- .38 



- .41 



4- 1 04./a' 

 + 0.59r/u' 

 + 0.55rfa' 

 + 0..53rfa' 



— 0.20(/rt' 

 + 0.34Ai' 



— 4.43rf«' 

 + 4.a5ia' 

 + 3.3-f/a' 



— l.lOtto' 



— lAlda' 



- \Wilc 



- 1.01,/c 

 -1.03,/f 



- 1.03J./ 



■ l.iUdc 

 •1.1.3ifc 



■ 7.40.7.- 

 5 29 //■ 

 SMili: 



■ 2. Tide 



dt — 

 lit + 

 dt + 

 dt + 

 dt - 

 dt + 

 lit + 

 dt + 

 dt - 

 dt + 



. 3.27tfc + lit ■ 



.10 

 .03 

 .09 

 .07 

 ,|]5 



.11 : 



.02 : 

 .05 ^ 

 .12 

 .10 

 .Si ■■ 



.07 

 .07 

 .09 

 .08 

 .02 

 .12 

 .05 

 03 

 .09 

 .10 

 .18 



LAMP WKST. 



- 30 



- 25 



1+ 13 



'+ 56 



+ 51 



+ 28 



+ 33 



+ 32 



+ 35 



\+ 110 



:+ -2 



+ 75 



j+ 67 



1+ 73 



53.95 



17.25 

 20.99 

 27.02 

 06.67 

 2923 

 33.12 

 13.14 

 59.93 

 32.27 

 2J.48 

 41. 9J 

 36.55 

 54.93 

 10.88 



• 0.03 



■ .04 \ 



■ .00 ! 



■ .11 



■ .18 

 .16 



■ .11 ' 



■ .13 j 



■ .14 

 .16 

 .12 



.30 

 .41 

 .34 

 .46 



+ 1.1.3da" 

 + 1.05(?a" 

 + 0.8I.ya" 

 + 0.5Wo" 



— O.Sôda" 



— O.lOrfa" 

 + 0.33(/a" 

 + 25</o" 

 + 0.27 At" 

 + 0.20rfa" 

 + 2.57(/a" 



— 1.51*1" 



— \Mda" 



— 0.98da" 



— 1.60(/(i" 



+ 1.16A- + 

 + l.Urfr + 

 + l.OWf + 

 + l.OScic + 

 + 1.83(/f + 

 + 1.61f/c + 

 + 1.14ffc + 

 + 1.20rfc + 

 + l.:9(/c + 

 + 1.23.* + 

 - -Z-Udi: + 

 + 3.36./C + 

 + 3.91rfc + 

 + 2.61(/c + 

 + 3.4.5dc + 



dt + 

 dt + 

 dt + 

 dt + 

 dt — 

 dt — 

 dt - 

 dt + 

 dt + 

 dt + 

 ilt + 

 lit + 

 lit + 

 dt — 

 dt - 



.32 

 .10 

 .12 

 .03 

 .25 

 .07 

 -03 : 

 .18 ■■ 

 .04 ■■ 

 .16 '■ 



.03 : 



.15 : 



.39 : 



.01 : 

 .00 



+ .18 

 + .02 

 + .04 

 + .02 



— .23 



— .08 



— .10 

 + .13 



.00 

 + -U 



— .01 

 + .OS 

 + .10 



— .04 

 .00 



Adopted Clock rate = + 0°.025 per hour. 



NORMAL EQUATIONS. 



O = + 9.068rfa — 6.151rfc + 3.a55((( +.430, 

 = + 8.819.ya' + 8.2.5Trfc + 2.103rf( +.172, 

 = + 7.620r/u" — 5.4I9rfc + 1.810,/< + .285, 



= — 6.151(7« + 8.2.57rfa' — 5.419f/a" + 79.0.59* + 14.6(i7./( + 1.040, 

 = + 3.0.55./.< + 2.103*'+ 1.840./a" + 14.f)67* + 23.356* + 0.SS4. 

 Whence, du = — .060 ; da' = + OlPl ; *" — .048 ; * = — 020 ; d/ = — .006 ; and weight of dt = 17.29. 

 Assumed value.s : a = — .020 ; o' = — .040 : a" = — .020 ; <• = + 030 ; f = + 2.030. 

 Wlience, total azimuth, (a + *) =— .080; («' + *') = — .039; (.a" + iln") =— .008; 

 CoUiraation (Lamp West), (c + dc) = + .010 ; 

 Clock error at 16h. (( + *) = + 2'-024 ; 

 and probable error i .018. 



