A PENDULUM FOR THE REDUCTION TO A VACUUM 
489 
Table II.—Continued. 
Pendulum. 
No. 
Total 
Interval. 
No. of 
Coincid. 
Mean 
Interval. 
Corrections for 
N' and N". 
See page 407. 
Arc. 
Therm. 
Rate. 
No. 5. Lead 
Sphere. 
49 
50 
• 51 
52 
53 
54 
55 
56 
h m s 
5 20 53,0 
6 26 21,0 
7 30 1,0 
4 24 46,0 
7 43 10,5 
8 23 4,5 
7 51 29,5 
5 31 4,0 
29 
36 
42 
24 
42 
47 
44 
30 
663 S 897 
643-916 
642-881 
661-916 
661- 679 
642-224 
642-943 
662- 133 
+ •406 
•663 
•614 
•451 
•279 
•618 
•550 
•375 
-5-702 
5- 830 
6- 178 
6460 
6-490 
6-504 
6-305 
6-572 
—•230 
•230 
•220 
•220 
•220 
•220 
•230 
•240 
86654-756 
86662-961 
86663-005 
86654-831 
86654-723 
86662-959 
86662-779 
86654-538 
No. 9. 
Ivory Sphere 
on Cylinder. 
57 
58 
59 
60 
1 13 18,5 
2 38 14,5 
2 56 3,0 
1 13 20,0 
7 
18 
20 
7 
628-357 
527- 472 
528- 150 
628-571 
+ •296 
•440 
•354 
•306 
-5-816 
5-591 
5132 
4-567 
+•200 
•200 
•200 
•200 
86669-683 
86722-649 
86722-602 
86671-208 
No. 8. 
Lead Sphere 
on Cylinder. 
61 
62 
63 
64 
3 13 45,5 
5 15 56,5 
6 50 3,5 
3 12 56,5 
24 
40 
52 
24 
484-396 
473-912 
473T44 
482-354 
+ •401 
•632 
•608 
•408 
—3-965 
3-594 
3-454 
4054 
+ •230 
•230 
•230 
•200 
86753-400 
86761-893 
86762-601 
86754-797 
No. 10. 
Brass Cylinder, 
with iron wire. 
65 
66 
67 
68 
4 7 38,0 
8 56 58,5 
8 15 37,0 
3 25 1,5 
23 
52 
48 
19 
646000 
619-587 
619-521 
647 447 
+•507 
•688 
•660 
•574 
—4-336 
3-995 
3-876 
3-905 
+ •600 
•600 
•570 
•570 
86664-263 
86676-189 
86676-280 
86664-134 
No. 11. 
Brass Cylinder, 
with Brass Rod. 
69 
70 
71 
72 
2 46 37,0 
3 51 56,0 
4 4 35,5 
2 21 31,2 
13 
19 
20 
11 
769000 
732- 421 
733- 775 
77L927 
+•419 
•655 
•634 
•451 
—3-189 
2-858 
2-556 
2 - 522 
+•500 
•500 
•500 
•500 
86622-450 
86634-217 
86634-058 
86622-289 
No. 12. 
Brass Cylinder, 
with Brass Rod. 
73 
74 
75 
76 
1 59 48,0 
4 37 24,5 
4 25 25,0 
1 46 46,0 
9 
22 
21 
8 
798-666 
756-568 
758-333 
800750 
+•553 
•740 
•728 
•632 
-3-793 
3-707 
3-439 
3-384 
+ •520 
•520 
•520 
•520 
86613-640 
86625-933 
86625-669 
86613-568 
No. 13. 
Brass Cylinder, 
with Brass Rod. 
77 
78 
79 
80 
4 5 0,0 
10 14 58,5 
8 12 27,0 
2 24 55,5 
17 
45 
36 
10 
864-706 
819- 967 
820- 750 
869-550 
+ •291 
•462 
•524 
•624 
—4 051 
3-289 
3-116 
3-254 
+ •600 
•600 
•600 
•600 
86596-677 
86608-533 
86608-548 
86596-694 
No. 18. Hollow 
Brass Cylinder, 
both ends closed. 
81 
82 
83 
84 
1 17 6,0 
4 7 20,5 
3 58 22,0 
1 55 37,0 
8 
29 
28 
12 
578-250 
511-741 
510-786 
578-083 
+ •574 
■655 
•503 
•462 
—5-012 
5-028 
5-459 
5-331 
+ •490 
•490 
•450 
•450 
86694-885 
86733-788 
86733-797 
86694-500 
No. 15. Hollow 
Brass Cylinder, 
both ends open. 
85 
86 
87 
88 
1 32 52,0 
3 8 39,0 
3 8 54,5 
1 25 11,0 
12 
27 
27 
11 
464-333 
41Q.0QQ 
419796 
464-636 
+ •442 
•584 
•714 
•410 
—6029 
6014 
5-845 
5-696 
+ •580 
•580 
•580 
•580 
86767-140 
86807-342 
86807-078 
86767-199 
No. 16. Hollow 
Brass Cylinder, 
top open, bottom 
closed. 
89 
90 
91 
92 
1 58 39,0 
4 6 45,5 
3 47 50,0 
1 5S 48,5 
11 
26 
24 
11 
647- 182 
569-442 
569-583 
648- 045 
+ •692 
•578 
•641 
•416 
—5-058 
4-493 
4-425 
4-479 
+ •660 
•660 
•660 
•660 
86663-298 
86700-200 
86700-256 
86663-246 
No. 17- Hollow 
Brass Cylinder, 
top closed, bottom 
open. 
93 
94 
95 
96 
1 40 36,5 
3 2 57,0 
3 29 34,5 
1 33 33,5 
14 
28 
32 
13 
43M78 
392-036 
392953 
431-808 
+ •402 
•746 
•694 
•565 
—5-102 
4-930 
4-434 
4-202 
+ •430 
•430 
•540 
•540 
86796-493 
86837-026 
86836-540 
86797 081 
