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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astronomical determinations of latitudes and longitudes.

Meridian.

Meridian, deduced from the observations of the Sun.......... 260° 47'-1.

No. 2. Tezpur, in Assam.

Coming from Bhutan, this was the first station I reached. It is situated on the
right side of the Brahmaputra, and has during the last few years become a very
important place for the manufacture of lac, and for the cultivation of tea and indigo.

Tea ought to be particularly mentioned in connection with Tezpur, on account
of Mr. Bruce, a resident of this station, having first found it growing wild in Assam.

My instruments were placed near the circuit bangalo, a government building
erected on a slight eminence for the temporary residence of officers while travelling.

Geographical Co-ordinates.

Latitude North. Longitude East Green. Height.

26° 34' 35" 92° 46' 45" 239 feet.

Observations: 1856, January 25.
Instruments: Theodolite 3, Troughton; Chron. 3; Barom. 1, Greiner. Observer: Hermann.







Latitude.



1856,

January 25.

Horizontal Circle.

Vertical Circle.







A.M.









Sun, Lower Limb.





h

m s

o / //

o / //

1)

1

32 33

269 10 35

43 40 58

2)

1

39 42

271 49 45

43 51 45

3)

1

46 41

273 50 5

43 56 38

4)

1

52 40

275 28 0

P.M.

Sun, Upper Limb.

43 59 18



h

m s

o / //

O / //

5)

2

4 10

279 35 40

44 28 15

6)

2

16 40

280 40 45

44 12 45

Barom. •

, 755-3 rmllim.

1 emp.

1 29-737 inches.

of Air \

( 81-3 Fahr.

Calculated by Method III. from the Altitude nearest the Meridian.