LONGITUDE OF McGILL OBSERVATORY. 



131 



Data from Observations at Montreal. 



Niime of Star. 



Time of transit 



over 

 mean of wires. 



Equivalent 

 sidereal time. 



Bh- 



Bight 

 Ascension- 



{T+Bb-K)-a\ A 



Junk 17, 1883. 



Assumed value of hourly rate of clock = .000. 



LAMP KAST. 



CoroDîe - - 

 Corona> - - 

 Serpentis - 

 Serpentis - ■ 

 Serpentis - 

 (Irsœ Minoris 



3^ 57.70 

 45 40.24 



9 54 3.5.00 

 9 58 42.05 



9 59 22 08 



(1.24 



h. m. s. 

 15 23 3.10 

 15 29 46.89 

 15 38 33.44 

 15 40 50. 25 

 15 43 31.39 

 15 48 18.42 



6. 53 

 6.73 

 6,43 

 6.43 

 6,51 

 9,82 



+ 1.15 



+ 1.12 



+ 1.01 



+ 1.04 



+ 1.05 



+ 4,87 



June 17, 1883. 



I.A.MP WEST. 



j3 Soorpii - - - 



Ô Ophiuclii - - 



c Ophiuehi - - 



19 I'rSiV Minoris 



— 19,5 



— 3.6 



— 4,4 

 + -76.2 



10 14 31.46 



10 24 4.24 



10 27 58,55 



10 30 0.30 



5,64 



5,84 

 6,80 



+ 1 06 



+ 1,00 



+ 1.00 



+ 4.18 



Ju.NE 19, 188:3. 



Assumed value of hourly rate of clocli = O'^.OOO. 



LAMP EA.ST. 



a Draconis - - - 



K Virginis - - - 

 t Cassiopeia?, L. C- 

 109 Virginis - - - 

 Groombridge, 2164 

 j3 Ursfe Minoris - - 

 48 H. Cephei, L. C. - 

 1 H. Ursœ Minoris- 

 /^ Corona; - - - - 

 ^^ Coronjf - - - - 



+ 64.9 



— 9.7 



+ 113.1 



+ 2,5 



+ 59,8 



+ 74,6 



+ 102,7 



+ 67,8 



+ 29,5 



+ 27,1 



8 9 



8 14 



8 27 



S 48 



8 56 

 S 59 



9 13 

 9 21 

 9 31 

 9 37 



30,15 

 57,82 

 44,02 

 32.88 

 37,98 

 11,35 

 42.03 

 23,41 

 5-63 

 ■IS 34 



6,11 

 4,66 

 6,20 

 7.12 

 8,22 



7,29 

 46 



a 



+ 2,36 

 + 101 



— 2.55 

 + 1.00 

 + 1.90 

 -Î- 3,77 



— 4.55 

 + 2.64 

 + 1.15 

 + 1.12 



JuxE 20. 1883. 



Assumed value of hourly rate of clock = .000. 



LAMP \VRST. 



Bootis - - - - 



Draconis - - - 



Ursa; Minoris - - 

 Cassiopeise, L. C. 



Librœ - - - - 



Serpentis - - ■ 



Ursa.» Min. - - - 



Scorpii - - . - 



Scorpii - - - - 



7 53 31. 67 



8 5 34.73 

 8 13 37,31 

 8 23 47.63 



8 48 41,24 



9 47 34.88 

 9 51 18.61 

 9 57 3101 



10 2 43,19 



13 49 9,32 



14 1 15.13 

 14 9 20. f2 

 14 19 28 91 



14 44 27-73 



15 43 31.38 

 15 48 18,24 

 15 53 28,78 

 15 58 41,81 



— 6.20 



— 6,82 



— 8,14 



— 5, 05 



— 5 98 



— 6,21 



— 8,14 



— 5,97 



— 5 97 



+ 4.85 

 — 2.55 

 .+ 104 

 + 1.05 



+ 4.87 

 + 1.08 

 + 1.06 



Jdne 21, 1883. 



Assumed value of hourly rate of clock = O'.OOO. 



LAMP EAST. 



Librœ - - 



Ursœ Minoris - 

 Bootis - - - 

 H. Cephei, L. C. 

 Coronte - - - 

 Coronœ - - - 

 Serpentis - - 

 iSerpentis - - 

 Serpentis - - 

 Ursa; Minoris - 

 Scorpii - - - 

 Scorpii - - - 



— 15,6 

 + 74,6 

 + 40.8 

 + 102.7 

 + 29 5 

 + 27.1 

 + 0,8 

 + 15.8 

 + 18.5 

 + 78.1 



— 22.3 



— 19.6 



8 44 45,55 

 8 51 20, 63 



.57 4982 



5 48.38 



23 14.13 



29 56,84 



:38 42.15 



9 40 .58.16 

 9 43 39,18 



47 24,01 

 53 .35.08 

 58 47.34 



14 44 



14 50 



14 57 



15 5 

 15 22 

 15 29 

 15 .38 

 15 40 

 15 43 

 15 47 

 15 53 

 15 58 



5. 86 

 7,31 

 6,55 

 4,99 



ay? 



0.2Î 

 6.06 

 6.18 

 0.15 

 7.38 

 6.05 

 5.97 



+ 0,91 



— 1.84 

 + 0.11 

 + 3.82 

 + 0.32 

 + 0.36 

 + 0.63 

 + 0.52 

 + 0.48 



- 2.63 

 + 1.00 

 + 0.96 



+ 1.04 

 + 3.77 

 + 1.32 

 — 4,55 

 + 1 15 



1.12 

 1.01 

 1.04 

 1.05 

 4.87 

 1.08 

 1.06 



