NO. 8. 
os 
PENDULUM OBSERVATIONS. 
Al 
=! § 2| Time of Coin-| S 8| Time of Coin-|- 
rede ere i a Oo 3 tion of Calculation of Period 
g|om cidence ort cidence 
alo 6 8 Coincidences 
Paliy: Z, 
33| +t S14 817 Bar. = 7555 
87—90 68—65 t = 716 = 10°69 
hm s hms m s a— wa 
1 8 98380 | 64 9 1 10 |60c=—32 230 
2 29 100 | 62 1 330 239 mae ee 
4 30 149 | 64 2 377 29-8 = 
5 30 478 | 65 3 102 94 |) Og pak say ea 
6 31196 | 66 3 424 a95 |-8 
7 31593 | 67 4 148 99°5 9°7057293 
9 32 57-4 69 5 19-4 293 log S = 9°7038929 
10 33 291 | 70 5 514 99-3 ee, 
i 3% 19 «| 7 6 U4 99'5 S= arast 
225 pe ge 
60 c = 32 29°591 p= 4998 
t 817 816 He oes 
a’| 84—81 61 — 64 Spa DERE 
Syg = 0°5055988 
33 t 8:08 7:95 Bar. = 7556 
a 60—63 48 — 45 t = 800 = 10°.36 
hm s hm s m s a = 523 
1 9 98 63 | 64 10 0280 |60c=3221°7 
) > 62 1 05 : > c= 328.3493 
3 99 111 | 63 1 326 91-5 2c—1 = 63'6986 
4 29 439 | 64 2 53 14 ee. 
5 30159 | 65 2 370 241 |e (2 ae 7G es 
6 30 489 | 66 3 100 14 SET 
7 31.208 | 67 315 20°7 pets Mager 
8 31536 | 68 4 143 907 | log 1SHaw.= — 18364 
9 32 256 69 4 46:0 204 log S = 9°7038986 
10 32 582 | 70 5 19:0 20'8 
rv 33 304 | 71 5 506 202 S= peer 
__ 202 — ees: 
60 c = 32 20-96 re = 
t 8:06 7:90 aaa =o 
a 59 —56 49 — 4-9 Sa laeezoow, 
‘Seg = 0°50560741 
Hawelk 10% 17 
15°.0 
Bar. 757°3 = 755°6 
1 In the middle of this observation, two men turned out and walked softly across 
the floor, causing a movement in the level as they passed near the apparatus. 
To 
this observation, therefore, only half the weight can be given as compared with the 
other 3. 
6 
