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 i. assam and khassia hills.

131

Refraction........... — 056

Parallax . . . .•........ -j- 0 6

Semidiameter ......... -j- 16 18

Sum of Corr..... -f 15 28

o /

True Altitude of Sun's Centre at Culmination, calculated ... = 44 16-4

Declination = 5........................... = — 19 9-0

Latitude N...............................= 26 34-6

Latitude N. (Thuill. App.) . . . 26° 36' 45".

Time.

n m 8

Apparent Noon, deduced from obs. 2 and 3, and 3 and 4 = 2 1 22

Equation of Time.......................= -J- 12 28

Mean Noon........................... 1 48 54

Longitude.

The adopted longitude, as given above, is taken from Thuill. App.

Meridian.

From observations of the Sun ..... 278° 11'-3.

No. 3. Udelguei, in Assam.

Situated at the southern end of the road from Lhassa to Assam, via Tauong
and Narigun, through the country of the wandering Kampo-Bhutias, it is an important
trading station, with extensive bazars much used at periodical fairs.

The instruments were put up near a government house, constructed of bambu
and cane, in charge of the daroga of the place.

Geographical Co-ordinates.
Latitude North. Longitude East Green. Height.

26° 45' 40" 91° 56' 30" 352 feet.

Observations: 1856, January 2.
Instruments: Theodolite 3, Troughton; Chron. 3; Barom. 1, Greiner. Observer: Hermann.

Latitude and Time.
1856, January 2. Horizontal Circle. Vertical Circle.

A. M.

Sun, Centre.

11 m s Olll Olll

1) 2 26 29 306 33 20 20 32 20

2) 2 41 52 309 12 30 23 1 55

17*