Magnetic Observations at Cambridge, United States. 
92, 
pottiageg v.F, | Att] p HL F.| Att. | Corr. 
Time SN Ines Pe Poa eee Soll rl Aa, 
bh. m. s ' 
6 30 | +9.40) 59.0] 143 0} 158.0] 59.0) 29.639 
7 0 | 10.17] 60.0] 143 5| 157.5] 60.0, 29.424 
7 30 | 10 29) 60.0) 143.5] 158.9] 60.0) 29 539 
8 0] 9.12) 60.3] 144 5} 159.3} 60 5| 29 539 
8 30 | 9.01) 60.3) 148.0] 161.1] 60.3) 29.531 
9 0} 9.46] 60.3] 150.7] 160.0] 60.0, 29 547 
9 30} 9.33/59 7} 150.0] 158.7] 59.5) 29 554 
10 0} 9.37] 59.3) 148.7] 156.5] 58.8, 29.553 
10 30 | 9.48/58 5] 147.5] 155.6] 58.6 29.543 
1L 0| 9.54) 59.2) 149.5] 155.2| 58.6 29.534 
11 30 | 9.36) 59.8) 149.7] 155.1] 59,0) 29.532 
12 0 | 9.48 61.0) 151 3) 153.8) 59.0) 29.541 
12 30 | 10.31) 60.0) 151.8) 153.5] 58 9! 29.511 
13. 0| 10.40) 60.0) 151.3} 154.2) 59.0, 29.532 
13 30 | 9.15) 60.0) 148.5] 156 8] 59.0 29 528 
14 0} 9.23/59.5| 151 2) 158.5] 588 29.519 
14 30] 9.23) 59.8) 155.0] 161.0] 59 0) 29.506 
15° 0] 12.40) 63.2) 146 0} 156.8] 59.5) 29.496 
15 30 | 12.43) 62.0) 150.0) 157.1] 62.0, 29.475 
16 0 | 11.08) 62.0] 150.0] 160.6] 62.0! 29.468 
16 30 | 11.41) 62.0) 151.0] 158.4] 61.0) 29.484 
17 0} 11.46) 62.0) 151.1] 159.0] 60.8 29.464 
17 30 | 11.49] 61.5] 152.8) 160.2] 60.4) 29 455 
18 0 | 11.35] 61 0} 145 9} 160.4] 60.5] 29.448 
18 30} 11.42) 61.0) 145.5] 159.6) 60.0) 29.426 
19 0} 12.49] 60.5) 154.1] 160.5] 60.0) 29.418 
19 30 | 12.09] 61.0) 153 8} 163.2] 59.9) 29.421 
20 0! 13.04] 64.0] 146.0] 161.0] 60.5) 29.357 
20 30 | 13.22) 63 7] 141.8) 159.8] 60.7) 29.364 
21 0} 13.48! 61.5) 152.0] 159 7] 60.7) 29 352 
21 30 | 14.36] 62.0) 155.5) 155.7] 61.3) 29.348 
22 0| 14.33] 625) 141.0) 164.7) 62.0) 29 356 
22 30 | 14.30) 62.7| 138 1) 164.5] 62.4) 29.373 
23 0} 14.31) 66.5] 149.1) 154.5] 62.9) 29.313 
23 30] 14.27] 63.3) 152.3) 154.7) 63.0) 29.317 
Nov. 5, 
24 0| 14.18) 636) 149 0) 155.2) 63.2) 29.317 
0 30} 14.48) 64.0] 148.6) 156.0) 63 6) 29.299 
i: 0 145 4| 157.8) 63 7) 29.315 
1 30 | 14.40) 63.5] 149.5) 159.7] 65.0) 29.337 
150] 13.17) 63.3) 148.5) 161.4] 64.0 
2 0 1311) 63.4] 148.3) 162.7] 63.9) 29.344 
210} 13.02| 63.2! 149.4| 
230 | 12.28) 62.9] 151.4) 161.4) 62.9) 29.357 
3 0 | 12.28} 62.2) 155.5) 161.5) 62.0) 29.358 
3 30} 11.04] 61.3) 149.4) 166.2! 61.4] 29.394 
4 0| 1128) 60.8] 146.0] 168.6] G0 3) 29.398 
4 30 | 10.17] 60.5] 149.0) 165.5] 60.0] 29.408 
5 0|  9.31| 60.5] 148.5) 162.8, 59.0] 29 410 
5 30 | 9.59) 60.0] 145.2) 161.2) 59.5) 29.409 
6 0 | 10.29) 60 0} 143.2) 160.2) 59 5) 29.430 
6 30} 9.08) 60.0) 142 8) 158.8) 59.5) 29 432 
7 0| 9.30) 60.0] 143.5) 160.3) 59.2) 29 319 
7 30} 9.28) 60.0) 142.7) 161.7) 59.0) 29 320 
8 0] 7.46591) 143.1) 164.0) 58 6] 29.480 
8 30 | 7.12) 58.0] 141.9) 164.1| 57.7) 29.479) 
9 0} 6.14) 58.0] 141 2) 165.5) 57 2) 29.500! 
9 30} 5.52) 635] 149.0) 165 1] 61.5/ 29.463 
10 0 4.25| 62 0} 148.2) 166.5] 61.0) 29.436 
10 30 146.2) 163.0] 55 4) 29 522 
11 0} 1.29) 57.0] 160 0| 162.2) 54.5) 29.516 
11 30} 6.07] 57.5] 147.5) 153.7 56.0) 29.540 
12 0!  6.48157.7| 154.0) 157.0 56.9) 29.545 
| 43.0 
Att. 
Th. 
51.0 
50.0 
490 
49.0 
48.3 
48.0) 
47.0 
46.5) 
46.2 
46 0) 
46.0 
46.0) 
46.0 
46.0 
46.0 
462 
Gottingen 
46 0 
46.5 
46.7 
46.6 
46.5 
464 
45.8 
44.5 
437 
42.0 
41.6 
42.0 
42.0) 
42 0) 
42.0 
42.2 
42.5 
44.5) 
43.3 
43.5 
44.0 
44.5 
45.2 
45.5 
45.6) 
46.0) 
46.0 
49.0 
50.0) 
49.0 
47.8) 
46.7 
56.0 
45.0 
45.8 
453 
44.6 
440 
44.0 
45.0 
43.5 
43.0) 
Mean V.F. 
Time. 
h. m. 
12 30 | 48.53 
13 0 8.17 
13 30 9.58 
14 0 9.17 
14 30 | 10.32 
15 0 10.26 
15 30} I1LJL 
16 0 11.42 
16 30 | 12.26 
17 0 12.43 
17 30 | 13.41 
18 0 16.17 
18 30 | 18.04 
19 O| 18.04 
19 30 18.30 
20 0 16.16 
20 30} 15.23 
21 0) 14.20 
21 30 | 14.1) 
22 0} 1505 
22 30 | 14.32 
23 0 14.08) 
23 30 14.52 
Nov. 6. 
24 0} 1436 
0 30 12 45 
1 0| 1240) 
1 30 11.39 
1 50 10.43 
2 0 10.27 
210 10.27 
Nov. 8. 
1 50 6.49 
2:0 6.04 
210 604 
2 30 0.14 
3.0 1.08 
3 30 2.16 
4 0 3.17 
4 30 3.06 
5 0 421 
5 30 5.41 
6 0 5.03 
6 30 6.42 
ie 10 6.40 
7 30 6.40 
8 0 5.4] 
8 30 6.00 
9 0 6.11 
9 30 6.12 
10 0 6.19 
10 30 6.37 
11 0 7.48 
11 30 7.08 
12 0 6.39) 
12 30 7.01 
13.0 7.01 
13 30 6.42) 
14 0 7.00 
14 30 7.40 
15 0 7.38 
15 30 7.43 
16 0 7.43 
Att. 
Tb. 
58.0 
58.0) 
59.0 
61.0 
59.5 
59.1 
59.5 
30.5 
61.3 
61.5 
61.5 
62.0 
62.5 
62.5 
64.2 
64.5 
645 
64.5 
65.0 
65 0 
65.5 
65.0 
65.0 
65.5 
65.0 
65.0 
61.7 
62.0 
62.0 
617 
36.2 
364 
36.6 
37.5 
39.6 
41.5 
44.0 
45.6 
47.5 
48.0 
49.0 
50.0 
51.5 
52 2 
52.4 
52.6 
52.9) 
53.0 
53.0) 
53.7 
54.0 
547 
53.5 
54.0 
54.0 
54.2 
54.3 
54.5 
54.6 
548 
54.6 
Dec. 
| 158.1) 58.4 
8) 164.3 
Corr. 
Att. 
H, F, Bar. 
Th. 
156.5) 57.0 
157.1) 58.0 
156.0) 53.0) 29.516 
29.595 
29.639 
29.594 
29.582 
29,595 
29.581 
29.612 
29.569 
29.450 
29.573 
29.560 
29.585 
29.585 
29.583 
29.573 
29.540 
29.565 
29.576 
29.561 
156.2) 
160. 
3 
5 SAAAMINN 
BLESSSSaS 
166.2) 64.0 
161.2) 64.0 
161.2 
161.0 
159.2 
159.5 
158.7 
160.) 
166.5 29.585 
29.621 
29.628 
29.631 
163.5 
162.6 
162.3) 
163.4 
BSFR 
29.658 
as 
—_— 
141.9 
140.1 
1444 
wo 
rg 
30.046 
30.051 
29.948 
30.017 
30.017 
5} 29.983 
29.961 
29.931 
29.855 
29.863 
29.850 
29.638 
29.767 
29.772 
29.771 
29.769 
29.770 
29 805 
29.846 
29.845 
29.865 
29.886 
29.760} ¢ 
29.760) ¢ 
9} 29.804! < 
29 801} < 
29.793} ¢ 
29.815) ¢ 
29.917 
5] 155.2] 57.0 
31.0 
RRREERSEEESS 
NOK AKonnennoos 
wo 
Do 
