No. 8.] PENDULUM OBSERVATIONS. 35 
Observed Dura- 
q| 3 By 
s (o} . . (=) Oo . . 
= ke Rime oft Coun: = 5 Rime os tion of Calculation of Period 
a| ° cidence om cidence ae 
|S 6 9 Coincidences 
Z a 
Distance 1 = 2342 mm. 
33 t 174 177 Bar. = 755'0 
70— 70 60 —61 ¢ = 1°76 = — 2°.05 
hm s hm s m s a = 636 
1 10 49 31°6 31 11 11 296 | 30c=21 580 
9 50 15:2 32 12 13:2 580 c = 435.9463 
3 50 59°6 33 11} BYPTI 581 2c—1 = 86°8926 
4 51 43°2 34 » » 
5 52276 | 35 14 25°8 58:2 log c = 16429223 
7 53 554 37 15 540 586 9°7039395 
8 54 38:9 38 16 37-2 583 | log 1SHaw.= — _760 
9 55 2371 39 17 22°0 58°9 log S = 9°7038635 
10 56 66 40 18 53 58'7 
11 56 51:0 41 18 5071 591 S = 05056657 
30 ¢ = 21 58:39 Fite 5° 
t 1°76 1-76 oe 908 
a 67— 66 58 — 57 T= — 553° 
Sgg = 05056189 
33 t 182 1-80 Bars—sipow 
a 64 — 65 55 —5'8 % = 1/80) =) 1°95 
hm s hm 8s Mm s a = 584 
1 11 35 39:0 31 1157 497 |30c = 22 3:7 
2 36 22°6 32 58 260 34 c = 448.1976 
3 37 (7:2 33 59 11-1 39 Qce—1 = 87:2552 
4 37 507 34 59 5414 3-4 
5 38 356 | 35 60 39-4 3:8 log ¢ = 16447103 
6 39 19:0 36 1 296 36 |log Q@c—1) = 29407913 
7 4) 37 37 2 76 39 9°7039190 
8 MW ATA 38 2 509 38 |logiSHaw.= — 760 
9 41 32:0 39 3 361 41 log S = 9°7038430 
10 42 15:0 AO 4 19:0 4:0 
11 43 00 41 5 45 45 S = 05056419 
30¢ = 22 3827 De enh as 
t 1°81 1-78 c= + 865 
a 60 — 62 53 — 5:0 0 = — 5529 
Sg = 05055948 
