56 



CHANDLEE AND McLEOD ON THE 



TABLE II. 



Observations of September 6, 1883, Cobourg. 



Clamp E.^st. 



Name of star. 



109 Herculis . 

 X Draconis . 

 a Lyrœ . . 



110 Herculis . 

 7 Lyrsc . . 

 TV Sagittarii 

 e Lyrie . . 



Sagittarii 

 1147 . . 

 Cygni . . 

 Cygni . . 



fl- 

 Br 



30 

 5 



h. m. 

 18 18 

 18 23 

 18 S?, 

 18 40 



18 54 



19 02 

 19 12 



19 29 



20 04 

 20 18 

 20 37 



45.57 

 10.77 

 01.22 

 40.56 

 30 86 

 52 23 

 21.31 

 39.25 

 60.78 

 05.25 

 30.26 



+ 21 43 

 + 72 41 

 + 38 41 

 + 20 26 

 + 32 32 

 -- 21 12 

 + 37 55 

 - 25 OS 

 +103 53 

 + 39 53 

 + 44 52 



b. 111. 

 18 18 

 18 23 

 18 32 

 18 40 



18 54 



19 02 

 19 12 



19 29 



20 06 

 20 17 

 20 37 



30.10 

 05.80 

 43.G6 



31.G8 

 22 84 

 58.33 

 04.28 

 46.98 

 07.00 

 47 20 

 09.14 



No. of 

 Wires. 



+1.00 

 +2.95 

 +127 

 +0.97 

 +1.16 

 +0.45 

 +1.26 

 +0.39 

 -2.09 

 +1.30 

 +1.41 



-.04 

 -.05 

 -.07 

 -.08 

 -.12 

 -.16 

 -.18 

 -.22 

 -.24 

 -.30 

 -.32 



Equations of condition. 



+0.407rfa 

 -1.616</« 

 +0.117rf(( 



+0.426rf(( 

 +0.235(/a 

 +0.973'/« 

 +0.133rf,( 

 +1.032rfn 

 +3.607(/a 

 +0.092(/« 

 -0.023(/fr 



+1.076(/c 

 +3.360rfc 

 +1.281rff 

 +1.067(/c 

 +1.186(/(.- 

 +1.073ffc 

 +1.2G8rfc 

 +1.105rfc 

 --4.168rfc 

 +1.303rfc 

 +1.411rfe 



+dt +.33 = 

 +dt -.'65 = 

 +dt +.03 = 

 +dt +.39 = 

 +dt +.36 = 

 ■+dt +.64 = 

 +dt +.04 = 

 +dt +.68 = 

 +dt +.49 = 

 +dt +.04 = 

 +dt +.02 = 



Resid- 

 uals. 



Clamp West. 



Aquarii . . 

 Urs. Maj. . 

 Aquarii . . 

 Fisc. Aust. . 

 Pegasi . . 

 Aquarii . 

 I'ugiisi . . 

 Auilronicilœ 

 Visciuin . 

 AiuIroiiiL't-Ue 

 IV'giisi . . 



22 00 

 22 15 

 22 48 

 22 51 



22 59 



23 03 

 23 14 

 23 32 



23 53 



24 02 

 24 07 



11.10 

 40.69 

 30.44 

 15.17 

 00.07 

 lli.ôl 

 55 02 

 28.77 

 22 23 

 24.87 

 16.81 



22 00 

 22 16 

 22 48 

 22 51 



22 58 



23 03 

 23 14 

 23 .32 



23 53 



24 02 

 21 07 



+0. 

 +2. 

 +0, 



+1. 

 +0. 

 -fO. 

 +0, 

 +0. 

 +0, 

 +0. 

 +0 



879rf«' 

 ,324(/«' 

 ,907rf<i' 

 ,114rfa' 

 ,507r/a' 

 ,982(/r(' 

 ,387f/(t' 

 032rf<(' 

 .616(/n' 

 ,307'?»' 

 50:f/»' 



-l,033f/c 

 +2.475(/c 

 -l.OiHdc 

 -1.158rfc 

 -1 033dc 

 -1.077(/c 

 -1087(/c 

 -1.359f/c 

 -1.006(/c 

 -1.1.35rff 

 -1.033rfc 



+dt +.56 = 

 +dt +.22 = 

 +dt +.55 = 

 +dt +.34 = 

 +dt +.09 = 

 +dt +.60 = 

 +dt +.26 = 

 +dt -.18 = 

 +dt +.15 = 

 +dt -.05 = 

 +dt +.30 = 



+.114 

 -.410 

 -.132 

 +.170 

 +.169 

 +.254 

 -.125 

 +.312 

 -..384 

 -.122 

 -.116 



+.290 

 -.247 

 +.184 

 +.051 

 -.115 

 +.329 

 +.064 

 -.288 

 -.050 

 -.219 

 +.085 



Ailiiptcil losing rale of chronometer, 1.5 sec. per clay. 



Normal equations •. 



+13.497r?f/ - 11 213(/<-" + 5.099(// +.3.218 = 



+ 9.5.57(/»' + 0,15b(/c' + 7.5.54rf/ +2.357 = 



-11.213(i',( + 1.38(/»' +45,085* + 1.413(/( -1.798 = 



+ 5.099</(i + 7.554(/a' + 1.413A- +18.872(/( +4.608 = 



Wheiiee da = -.188, da - -.137, dc = -.002, dt = -.138, weight of dl = 10.121 



anil probable error of dl = +.048 



s. h. 



On tliis day a - -27.00, a = -27.00, c = 0, i = 21.00 at 21 sidereal time. 



Hence total aziniutli error before reversal = « + da — —27.188 



'■ after " = "'+ da' - -27.137 



" coUimation error = c + (/<■ = -00 002 



chronometer error = ( + rf( = +20.802 (slow) at 21h. 



Remark. The sky was hazy, especially after exchange, only bright stars being visible at the end of the observations. 



