No. 8.| 
PENDULUM OBSERVATIONS. 
55 
The observations taken thus give the following mean value for the 
periods of the pendulums: 
Station Date 
Vienna, Tiirkenschanze. ...... May 27, 28, 1892 
Christiania, Observatory ...... July 21-925, 1892 
Christiania, Observatory. ..... June 11, 1893 
Christiania, Pendulum-house . . . . | May80,June 13,1897 
Kihabaroval, = is tscetorw ys, ater sree July 30, 1893 
79° 15/2 N. Lat. 137° 28’ E. Long. |January 16, 1894 
TEP aay 3) ee Bak) » March 16, 1894 
84° B41» » 84° 95/3 » » June 8, 1895 
84° 49'4 » >» SSrelao ares June 10, 1895 
84° 44.7 »  » S320250o) a June 11, 1895 
85255543' >} 66° 48' > » November 14, 1895 
Son ATT) 3° > PO qe os > November 23, 1895 
84° 519 >» =» 40° 43/6 » » January 16, 1896 
84° 14.7 >» » 12° 916 » > April 29, 1896 
84° 12'4 » » 19° 147 >» >» April 30, 1896 
Pendulum 33 | Pendulum a Mean 
0°5061970 0°50644.11 0°5063191 
05059172 0°5061624. 0°5060398 
05059170 0°5061633 0°5060402 
05059174 05061605 0°5060389 
05057528 0°5059884 0°5058721 
0°5056601 
0°5056402 
0:5058560 
0:5055948 0°5058432 0°5057190 
05055837 05058252 05057045 
0°5056014 
0'5058531 
0°5055966 
05056146 0°5058585 05057365 
0°5056114 0°5058596 0°5057355 
If we take the difference between the periods of the two pendulums, we 
obtain: 
1892, 
From the observations in Vienna, 
S34 — S33 = DAA X 10-7 
— » Christiania, 1892, » » » = 9459 » 
aa > a= (sR, > 3) es DUG 
= » = (Si, 2 o se OMB 5 
or as a mean » » » =Q447 » 
The following are the results of the observations made during the 
expedition : 
The observations of June 10, 1895, $,,—S,, == 2484 X 10-? 
a Sl aR OASOH erin tina eS FOUN sm 
—»— » April 29, 1896, » » » = 2439 » 
— » — » » 30, 1896, » » » = I489, » 
these values agreeing satisfactorily with the 
If the 
and 23rd November, are reduced to the same 
two observations 
above-determined mean values. 
made with separate pendulums on the 14th 
latitude, they will give a diffe- 
rence of 2513 10~—%, a value which is not too far removed from the above 
mean. 
