INTRODUCTION. xli 
TABLE 19.—Observations to determine the Temperature Correction of the Bifilar Magnet. 
Reading are 
en Tempera- Reading jof Declino-| u—w aa 
Gottingen ture of Pia Gee 0) | MR eA BRO YT 
Mean Time. ‘file EM. aoe meter minus i —Q. 
Bifilar Unifilar. | reduced | »(g—q),| Readin Thermo- 
(d—d,) g 
Magnet. =rd. | Corrected.| meter. 
h. co s Se. Div. Se. Div. Se. Div. Se. Div. . 
0 Magnet |Away. | 260-69 | 153-86 
sO 4 | ¥ 
0 34-97 29.63 7-72 : 154-20 1-90 | 149-21 36-7 —0-000326 
1 57-60 10-11 “| 154-69 ~~ | 150-07 | 36:8 ; 
20-45 Sry) -- 0-000296 
1 78:05 10:85 | 153-86 150-99 | 36-9 #s 
1 60:72) | 2283 agtoe | 1405 | P28. | a5r18: | ago | eo e0e2et 
a5:10 9) Cocoon iss fT 688. \. y51.98 || aga | pe oeenees 
= 35-10 | 99.70 ee iG iyi pee Bee ae —0-000283 
2 57-80 12:05 | 156-28 151-30 | 37-5 5 
2 sito | eed | 156739 0222 | 45071 | ang | 7 Or000ss2 
3 SO SUE eee ea 88 | 156-60 L228 lvasacagi|)<aygr | 0008 
i 23-53 Sa fii pees a — 0:000246 
3 35-97 11-96 | 157-05 zz | 155-13 | 381 
21-58 : Z sacs) [ee —0-000282 
3 57-55 13-55 | 157-09 155-64 | 38-4 ae 
23-80 = ihre . | —0-000342 
3 81-35 : 15-77 | 157-58 154-66 | 38-6 
22.30| -: — 1.38 espe 2o-) | 0.000258 
4 59-05 13-84 | 157-03 = | 155-78 | 38-7 
4 35-25 | 22°80) jo54 | 157-78 | 729 | 155.77 | 38-8 pone 
“22 | 34.40 SoA OVO |e ee cat —0-000315 
4 69:65 | 35.99| 15:40 | 157-92 | ~ 55 | 155-67 | 388 | 6 o90319 
5 34-65 13-14 | 158-49 155-31 | 38-9 
5 Magnet |Away. | 266-39 158-76 
17 || Magnet ;Away. | 265-41 | 157-84 
9 23 49|| 33-65 9:17 | 156-90 149-65 | 38-1 
10 0 8] s9-12 | 3°42) 10-55 | 1s6-67 | ~1'6) | 150-18 | aga | ~Op00eke 
0 29] 80-60 | to72| 11-78 | 156-33 a7 | 160-60.) 38:5 | _ o.qq0993 
0 45] 61-85 10-39 | 156-31 | — 150-92 | 38-6 ; 
: 26-55 = SSNS 2 | —0-000271 
1 5| 35-30 | 55 .49| 7-97 | 155-66 1.69 | 15186 | 38-7 0.000275 
1 229)! 58:90 (| 72 Gq) 9:87 | 15587 | 145 | 15262 | 388 | 7 sanosie 
1 37] 77-50 11-36 | 155-88 | — 15282 | 38-8 ; 
20-90 —1-61 ; —0:000308 
155] 56-60 | 55.39| 9:93 | 156-06 1.65 | 19313 | 389° | 7 gp qooo9s 
211] 34-50 | 56 g5| 8:12 | 155-90 | ~ J'on | 153-11 38:9 | — 5.000985 
228] 61-35 10-38 | 156-20 | ~ 153-52 39-0 : 
2 46) 93.50) o-'5,| 1243 | 15650} 1°08 | isa7a | 390 | 7 Oonooee 
3 3} 57-90 | o745| 10:84 | 156-79 | ~ 136 | 15251 | 391 | — 4 oo0329 
3 20] 35-75 | 55 .99| 9:02 | 156-83 | “14g | 150-84 | 39:2 | — 5 o99936 
338] 58-65 10-14 | 156-47 152-76 | 39-4 : 
20-10 — 1-96 —0:000385 
3 57|| 78-75 13-35 | 157-72 ‘ 152-75 | 39-6 
42-50 —3-19 : —0-000291 
4 18] 36-25 | 555| 10-20 | 157-76 | 5.5 | 151-65 | 39-7 0.000294 
4 43] 68-30 °) 12.85 | 157-91 153-49 | 39:3 | — 
4 55 Magnet |Away. | 264-91 157-65 
49. The mean of the partial results, November 9, is Q=0-0002979. 
Wan ee Bedtvins- socialism Geri aan--avi LO, 18: O= 00002954 
The mean of all the partial results is Q=0-0002945. 
Correction for the expansion of the silver wires and brass grooved wheel is 
0:000010 (No. 32.), whence the adopted value, 
q=0-000304. 
MAG. AND MET. OBS. VOL. I. l 
