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)

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140 ASTRONOMICAL DETERMINATIONS OE LATITUDES AND LONGITUDES.

Hills, which terminate here very abruptly toward the plains. All the eastern border
of the Khassia and Jaintia Hills is particularly remarkable for excessive precipitation
of rain, often exceeding GOO inches in a year. Soon after the rains the climate becomes
dry and very healthy, during which period it is found to be an excellent place for a
sanitarium.

My instruments were set up in an open situation, not far from the house of
Captain Byng, who, unfortunately, was killed during the time of the rebellion, in an
expedition against the Kacharis.

Geographical Co-ordinates.

Latitude North. Longitude East Green. Height.

25° 14' 15" 91° 40' 30" 4,164 feet.

Observations: 1855, November 4.
Instruments: Theodolite 3, Troughton; Chron. 3; Barom. 1, Greiner. Observer: Hermann.

Latitude and Time.

a. Observations of the Sun.

1855, November 4. Horizontal Circle. Vertical Circle.
Sun, Upper Limb.

P. M.

h m a oil/ o I ll

1) 5 40 23 2 24 10 49 43 0

2) 5 52 21 6 39 50 49 23 40

3) 6 0 14 9 31 30 49 1 10

4) 6 4 50 11 9 15 48 49 50

5) 8 6 30 45 26 15 34 19 55

6) 8 11 50 46 27 55 33 25 50

O

(660-0 millim. „ ( 20*3 C.

Barom. \ . , iemp. of Air \ „ ,

( 25-985 inches. 1 (68-5 Fahr.

First Approximation.

Calculated by Method I., from Observations 1 and 6.

1. 6.

Refraction............. — 0.41 — 1 17

Parallax.............. + 5 -f- 5

Semidiameter ........... — 16 10 — 16 10

Sum of Corr........ — 16 46 - 17 22

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