LONGITUDE OF COBOUEG, ONTARIO. 

 TABLE IL — Continued. 

 Observations of Septembki; 8, 1883, Cobouug. 



57 



Clamp East. 



Name of star. 



a Lyra! . 



( Aquilic . 



5 Aquilac . 



/i' Sagittarii 



5 Cygni . 

 Br. 1117 . 



X t'eiilici . 



T Cygiii . 



e I)eli)liini 



D (.'aiiricorni 



a Cygiii . 



70 Draconis 



li. m. 



18 --Vi 

 1!) CO 



19 10 

 19 29 



19 a 

 •10 01 

 ■20 12 



20 18 

 20 27 

 20 33 

 20 :J7 

 20 51 



01.17 

 0.3.10 

 09.:J9 

 39.22 

 22.17 

 00.60 

 52.21 

 05.22 

 41.03 

 27 38 

 30.23 

 05.43 



+ 38 41 

 + 13 41 

 + 2 53 



- 25 08 

 + 44 51 

 +103 53 

 + 77 21 

 + 39 53 

 + 10 54 



- 18 83 

 + 44 52 

 + 82 06 



No. of 

 Wiree. 



h. m. 

 18 32 



18 59 



19 19 

 19 29 



19 40 



20 04 

 20 12 

 20 17 

 20 27 

 20 33 

 20 37 

 20 50 



ob.ib 

 40.05 

 14.43 

 13.84 

 57.92 

 23.00 

 29.61 

 40.69 

 15.84 

 01.75 

 05.54 

 44.41 



n. 



+ 1.27 

 +0.89 

 +0.76 

 +0.39 

 +1.41 

 -2.09 

 +3.82 

 +1.30 

 +0.85 

 +0.49 

 + 1.41 

 +5.72 



.41 



.52 

 .55 

 .56 

 .56 

 .50 

 .57 

 .58 

 .60 

 .60 

 .61 

 .61 



Equiitioiis of fouditiou. 



+0.117</.( 

 +0 518</« 

 +0.658r/a 

 +1.032(^(( 

 -0.023»/.- 

 +3.008</., 

 — 2.513(/» 

 +0.092'/(r 

 +0.550,1,1 

 +0.93G(/(( 

 -0.028(/,r 

 -4.498(/.( 



+ 1.2blcZc +(/( 

 -1.029(/t +(// 

 + 1.001(/r -\-(lt 

 +1.105f/c +(// 

 +1.41 1,/c +,n 

 — 4.15o(/f +(// 

 +4.560f/o +(// 

 + 1.303f/c +rh 

 +1.018rf(- +,lt 

 +1.055</r Adi 

 +1.411rfc +dl 

 +7.280rfe +.// 



+0.03 = 

 -0.22 = 

 -0 01 = 

 -0.25 = 

 + 0.41 = 

 -1.31 = 

 +1.00 = 

 +0.24=0 

 -0.19 = 

 -0.46 = 

 +0.09 = 

 +1.92 = 



Resid- 

 uals. 



-.015 

 -.104 

 + .153 

 + .055 

 +.307 

 +.005 

 -.070 

 +.183 

 -.084 

 -.169 

 -.013 

 + .058 



Clamp West. 



30 II. Urs. M.ij. 



9 II. Draudiiis 



10 Lacertie . 



A I'egasi . . 



a I'isc. Aust. 



Androinokp 



0- Aqiiarii 



4 Cassln|ioi;e 



y Cepliei . . 



Pegasi . . 



w Pisciuin 



a AnJromeiUe 



7 Pegasi . . 



22 15 

 22 25 

 22 34 

 22 40 

 22 51 



22 56 



23 03 

 23 19 

 23 34 

 23 46 

 23 53 

 21 02 

 21 07 



40.74 

 04 53 

 05.11 

 57.93 

 15.18 

 30.94 

 16.52 

 44..53 

 43.05 

 36 38 

 22.24 

 24.89 

 16 83 



22 15 

 22 24 

 22 33 

 22 40 

 22 50 



22 50 



23 02 

 23 19 

 23 33 

 23 40 



23 52 



24 02 

 24 00 



+2.324rf,.' 

 +3.651rf«' 

 +0.123(/(/' 

 +0.389</<;' 

 +1.114(io' 

 +0.05ûrf<(' 

 +0.982(/«' 

 -0.639(?<i' 

 -2Â20(l,i' 

 +0.454rf.(' 

 +0.616</.i' 

 +0.307 f/«' 

 +0.507f/i/' 



+2.475(fc 

 +4.227(/c 



-1.227r/f 



-l.OSOti'f 

 -1.157(/c' 

 -1.339rff 

 -1,077(/.- 

 -2 105f/c 

 -4 440rfc 

 -1.054(/t 

 -1.00(3f/.- 

 -1.137(/.- 

 -1.0:î3,/c 



+dt -1.44 = 



+dt -2.82 = 

 +,lt -0.00 = 

 4 dt -0.19 = 

 + (/( -0.62 : 

 +(/( +0.33 = 

 +dt -0.58 : 

 +dt +0.36 = 

 -idl +2.20: 

 +dl -0.33 = 

 +dl -0.48 : 

 +dl -0.23 = 

 +d' -0.41 : 



Adopted losing rate of chronometer, 1.5 sec. per day. 



+.217 

 -.108 

 -.050 

 + .018 

 +.224 

 + .280 

 H .076 

 -.208 

 +.231 

 -.077 

 -.100 

 -.084 

 -.112 



Normal equations : 



+34.477rfrt - 42.735f/c + 0.0V2dt -13.343 = 



+20.746t/ii' + 18.615rfc + 6.632A -15.074 = 



-42.735(/« +18.015*!' +127.024tfc + 4..385rff + 3.129 = 



+ 0.912(/a + 6.632(/<^' + 4.385t/c +22.578f// - 3.335 = 



Whence da = .380, da' = .758, dc - -.003 



and probable error of dl = ±.023 



On this Jay a = 1.00, a' - 1.00, <■ = 0, 



Hence total aziimith error before reversal = n + da — 1.386 



' after 

 " collimation error 

 chronometer error 



<// 



-.090, 



weight of dt = 20.431, 



a. h ni 



( = 24.00 at 21 30 sidereal time. 



= a' + da.' = 1.7 58 

 = c + (/«■ =-- -.003 

 = <+</( = 23.910 (slow) at 21li. 30 m. 



Sec. Ill, 1888. 8. 



