o Observations of Vibration, 2nd of October 1876. Station Christiania; Lat. 59° 54' 43". Long. 10° 43' 37". Chronometer. Error at Station = 0;‘ 42m 38' Daily Rate (s) - 4/5 Accl. Magnet (A) suspended. Effect of 90° of Torsion = 2.26 Div. = 4.'29. One Div. of Scale = 1 .'9. Temp, of Magnet At Commencement | ; Mean Time | l'1 50 p. m. 1 1 Semiarc I 76' 1 At End | 1 at Station ) 2 2 l j of Yib. | 22.8 ( 55.°0 t0 = 55.°0 t„ — 55. 0 Scale moving apparently to the Right Scale moving apparently to the Left No. of Vib. Time of Centre passing wife No. of Vib. Time of Centre passing wire Time of 100 Vib. No. of Vib. Time of Centre passing . wire No. of Vib. Time of Centre passing wire Time of 100 Vib. O 2h 33m 2 1/7 IOO ■ 4°m 38.’i 7 m l6.*4 5 2* 33™ 43-*5 105 41m 00.'0 7™ 16/5 10 •34 5-3 I IO 41 21.7 16. 4 15 36 27. 1 ”5 41 43-5 16. 4 20 34 49.0 120 42 5-5 16.5 25 35 io. 7 125 42 27. 1 16. 4 30 35 32.7 130 42 49.2 16. 5 35 35 54-5 i35 43 - I I. O 16.5 40 ' 36 16.3 140 43 33-0 16. 7 45 36 38. 0 i45 43 54-5 16.5 50 37 O. O 150 44 16.5 16.5 55 37 2 1.7 i55 44 38. 3 16. 6 Diff. 3 38.3 30 Diff. 3 38. 2 29 100 at 2 40 38.3 Mean (1) = 7 16.5 105 at 40 59-9 Mean (2) = 7 16.48 H ‘l i | 86400 ««' ( rp2 _ n 16 ( ‘ P*{ -O + f* x"j. ma | T- 1 — 86400 = 0.99995 Mean (1) = 7m 16.50 „ (2) = 7 16.48 eta ~ 16 = O.OOOOI T„= 4-'3649 Log. = 0.63997 s act'. = 0.99994 . Log. — Q.QQQQ7 86400 16 H T, Log. = 0.63994 1 + F = 1.00079 2 = 0.00282 r L\2 Log. = 1.27988 + /' -V m0 0.99997 = 0.00088 1 + t? — — + p — Y°- = 0.99885 Log. = 6.29003 m0 T Log. = 9.34714 Log. = 9.99950 T4 Log. = 1.27938 7r-K Log. = 1.69705 mX= ^ Log. = 0.41767 ^ • x~ 0 00088 Log. = 6.94289 J L°g- = 9-34837 Observation of Torsion. «X— ”1, = X" Log. = 1.06930 A Circle turned Scale Mean Diff. X' = 3.4249 Log. = 0.53465 o° = 40 m"1 Log. = 9.76604 + 180" = 44-3 39-75 4-55 m'— 0.76387 Log. = 9.88302 O" — 39-5 — 1800 = 35-5 40. 0 4-5 0° = 40.5 4-5 90° = : 2.26 = 4/29 Observer Carl Wide.

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