8 i I 2 M. 1 II 2 M. 1 III ' 2 M. 0. 165° 7-'i 7-'5 165° 7 -'3 44° 55-5 55-° 44° 55-'25 jo 0 00 cvj 3i-'25 284° 31/6 © 46 16. 5 67-5 46 42.0 289 52. 5 104. 5 290 18.5 173 i5-o 7i- 25 173 43- 1 Oh. ©1 7" 3m o'5 r 3/5 7* 5’" 2/0 7/l 2 1“ 26/0 25“ 32/5 lh 23“ 29/2 7h 39"' 3i-’5 44“ 9/0 7 * 41“ 50/3 I© 5 38.3 9 4i-5 7 39-9 24 4- 2 28 9.4 26 6.8 42 7.0 46 43-7 44 25.3 Ch. 77 6™ 20/95 7 24 48.0 7 43 7- 8 u. O 28 31-53 - O 28 31.6 — O 28 31-7 M. T. 6 37 49-4 6 56 16.4 7 14 36.1 E. • + 44 0 + 43-9 + 43-9 t 6 38 33-4 6 57 0.3 7 15 20.0 c) 23r 4' 20" 23° 4' 20" 2 3° 4' 20" <f 60 59 36 60 59 36 60 59 36 a N 70 18/0 W N 66 28/7 W N 62 4 i.'o W O 46 42 O 290 18.5 i73 43- 1 N. P. 117 O. O 356 47. 2 236 24. 1 0. 165 7- 3 44 55- 2 284 31. 6 A. N481 7- 3 E N 48° JO 06 N 48° 7-'5 E Azimuth of Poldetind = N 48° 7.'6 E. Samtidig maaltes Horizontalvinkelen mellem Polde- tind og G-avlen af et Hus med Theodoliten og fandtes = 130° 50.'1. Altsaa bliver Azimut af Gavlen = N 178° 57/7 E eller S 1° 2/3 E. The horizontal angle between Poldetind and the gable of a house, was measured at the same time with the theo- dolite, and found to be 130° 50/1. Hence, the azimuth of tlie gable = N 178° 57/7 E, or S 1° 2/3 E. Klokkeslet. (Hour.) Magnet I. Gavl. (Gable.) Diff. Magnet II. Gavl. (Gable.) Diff. M. Deol. 3;‘ 20“ p. m. 278° 39' ■2950 44' 17° 5' 278° 27' ■ 295° 46/5 17° 20' 170 12/5 CO *4- 0 00 7 30 » : 218 13 235 22 1.7 9 217 49 235 22 17 33 17 2 1.0 18 23.3 5h 25“ p. m. 180 19/ Den 13de Juni tog Prof. Mohn folgende Observa- tioner til Bestemmelse af Deldinationeu, paa samme Tid som jeg svang Skihet for at bestemme Compassernes De- viation. Stativet med Theodoliten rykkedes 0.75 Meter mod Sydsydost fra den forrige Plads. Herved bliver Azimut af Poldetind fra den nye Plads O.'l mindre, eller N 48° 7/5 E. Magnetometret opstilledes paa sin Plads og der gjOr- des folgende Observationer, med Instrumentets egen Ivik- kert, for at bestemme Magnet-Axens Collimation. On the 13th of June, Professor Mohn took the fol- lowing observations to determine the declination, whilst I swung the ship for deviation of compass. The theodolite and stand was now moved 0.75 metre south-south-east from its former position. Taken from this point, the azimuth of Poldetind will be 0/1 less, or N 48° 7/5 E. After mounting the magnetometer, he took the fol- lowing observations, with the telescope of the instrument, to determine the collimation of the axis of the magnet: —

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