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)

group vi. bhutan to nepal.

403

No. 46. Rangjt Bridge, in Sikkim.

Latitude North. Longitude East Green. Height.

27° 4' 50" 88° 10' 15" 3,130 feet.

Observer: Hermann. See p. 189.

INTENSITY.

1. Horizontal Intensity.

A. Vibration.

1855, June 15, 121' 30m p.m. local time.
Magnet vibrated: LI. Temp.: 30°-8 C, 87°-5 Fahr.
Chron. H, losing 0s-5.

Semiarc

No. of vibrations.......... 580 ■

beginning........ 165

ending.......... 175

Torsion (90°) . . \......... 6'

log K = 0-43821 log mX = 0-54470

Time of 1 vibration..... 2s-776

q = 0-00020

[j. = 0-00017

Time of 1 vibration corr. . . 2s-779

B. Deflection.
1855, June 15, 12h 10m p.m. local time.
Magnets: Deflecting Ll, deflected H21.
Deflection bar: 112. Distances: 1 foot. Temp.: 30°-6 c, 87°-1 Fahr.

1 foot,
6° 23' 3i
jj. = 0-00017

u0 = 6° 23' 36"

1 foot.

Temp, of magnet. . 30°-8 C, 87°-4 Fahr.
q = 0-00020

log ~ = 8-90145

m = 0-5285 X = Horizontal Intensity = 6-632

No. 47. Tonglo, in Sikkim.

Latitude North. Longitude East Green. Height.

27° 1' 50" 88° 3' 55" 10,080 feet.

On a fine level stratum resting on rocks of gneiss. (See p. 190.)

Observer: Hermann.

51*