No. 8.] PENDULUM OBSERVATIONS. 17 
EI s : 4 ey Observed Dura- 
4 Oo Time of Coin- | S 2 | Time of Coin- G F ‘ 
3 | oH : wo , tion of Calculation of Period 
=| ° cidence or cidence ae 
ales 43 Coincidences 
a A 
Christiania. The Observatory. 
June 11th, 1898. 
Comparison of Clocks. 
s 
Michelet 10% a. m. Error 4048 
: 10? p. m. » 4407 108 18 Michelet = —59.10—7 
Hawelk Michelet Hawelk Michelet Hawelk Michelet 
hm s hm s hm s hm s hm s hm s 
1 19 23:0 10 44 185 2 46 305 12 11 585 417 265 1 43 285 
29 39°5 45 35°5 47 51 13 19:5 18 48 44. 505 
J 20) 1:95 10 44 57 2 47 10°75 12 12 39 418 72 144 95 
log 18 Hawelk = 0:0026847 log 18 Hawelk = 0:0026918 
33 | Bar. | 7649 18°.1 
t | 1299 12-975 pata 
a 39—41 9-8 — 3-1 t = oe => AZ 
hm s hm s m Ss US 
1 1 28 39:1 31 211316 |80c=49 525 
2 30 55 | 32 12 578 523 NSD di Ree 
3 31302 | 33 14 295 523 NEN Nate 
4 32 56:3 34 15 49°0 527 log ¢ = 1°9332797 
5 34 218 35 17 140 52°2 | log (2ce—1) = 2:2317702 
6 35D > 36 18 40'8 » 4 
i 97015095 
7 37 13°5 37 20 59 524. log 18 Haw. = 26847 
8 38 398 38 21 33:1 533 los S — 9°7041942 
9 40 54 | 39 2 579 525 Pe = 
10 41 31:0 4) 9A. 950 540 __ ora 
11 492, 57:0 41 9% 50:5 53°5 5 e. caer caibes 
30 ¢ = 42 52-77 __ 788 
a | 84-38 25 — 28 Seles 
t 12°92 13°05 SP area 
Bar. 764:75 18°.7 Sigg = 0'5059202 
