Schlagintweit, Hermann von; Schlagintweit, Adolf; Schlagintweit, Robert von: Results of a scientific mission to India and High Asia: undertaken between the years MDCCCLIV and MDCCCLVIII, by order of the court of directors of the hon. East India Company (Band 1): Astronomical determinations of latitudes and longitudes and magnetic observations: during a scientific mission to India and High Asia (Leipzig, 1861)

360

magnetic obseevations.

SECOND SERIES.
INTENSITY.
1. Hobizontal Intensity.
A. Vibration.
1857, March 20, 2h p.m. local time.
Magnet vibrated: II. Temp.: 28°-3 C, 83°-0 Fahr
Chron. R, losing 0a-6.

No. of vibrations.......... 120

j beginning......... 160

Semiarc j

( ending.......... 140

Torsion (90°)............. 0'

log K = 0-43821 log mX = 0-52667

Time of 1 vibration......... 2-835

q = 0-00020

[J. = 0-00017

Time of 1 vibration corr....... 2-837

B. Deflection.
1857, March 20, lh 30m p.m. local time.
Magnets: Deflecting Ll, deflected if 21. '
Deflection bar: H3. Distances: 1 foot, 1-3 foot. Temp.: 27°-2 C, 81°-0 Fahr.

1 foot.
U0 = 6° 28' 34"
[jt = 0-00017

1-3 foot.
2° 57' 2"
0-00017

1 foot.

o

Temp, of magnet 26-7 C.

80-0 Fahr.
q = 0-00020

1-3 foot.
27-2 C.
81-0 Fahr.
0-00020

log ±= 8-75402

m — 0-4369 X = Horizontal Intensity = 7-697

Mean of the two series . . . = 7-678

2. Dip.

1857, March 23, 5h 10m p.m. local time.
Dip needle: No. 2. Temp.: 27°-3 C, 81°-2 Fahr.

End A.

O ;

Face to instrument 33 35 • 7 ° . /

i7 i QO in c Mean a = 33 38-1

iace reversed ... 33 40-5