3‘M 
CAPTAIN SABINE ON THE REDUCTION TO A VACUUM OF 
Great weight uppermost. April 23rd. Clock making 86466.00 vibrations. 
Observers. 
No. of 
Coincid. 
Standard 
Therm. 
Barom. 
or 
Gauge. 
Times of 
Arc registered 
and true Arc. 
Mean 
Interval. 
Correc- 
tion for 
Arc. 
Reduc- 
tion to 
49°. 
Corrected 
Vibrations 
at 49°. 
Disapp. 
Re-npp. 
Coincidence. 
Captain J 
Sabine. ] 
Captain J 
Sabine, j 
1 
2 
3 
12 
13 
14 
m s 
55 27 
02 42 
09 59 
15 39 
22 55 
30 13 
m s 
55 39 
02 55 
10 13 
16 09 
23 30 
30 49 
| ll n s 
V 1 02 49.17 
|>2 23 12.5 
0) 00 
^ f-H 
cO O 
II II 
> O no 
g«? 
M ® O 
1 ■ 
>438.484 
+ 0.29 
+ 0.26 
86072.15 
49.5 
29.604 
49.7 
29.612 
49.6 
29.608; Capill. + 0.019; Reduction to 32° — 0.052; = 29.575. 
86072.15 
49.6 
0.90 
48.7 
3.30 
Div. o 
1.20= 1.44 
1 * 
S 
S 
>454.91 
+ 1.04 
+ 0.39 
86087.27 
0.25 = 0.30 
J 
Captain J 
Sabine. ] 
Mr. f 
Tayloii. ] 
1 
o 
3 
34 
35 
36 
18 22 
25 56 
33 29 
28 21 
35 58 
43 33 
18 31 
26 04 
33 38 
28 52 
36 26 
44 02 
} 
h m s 
3 26 00 
7 36 12 
49.15; + Index correction for a rarefied medium 0.75 = 49.9. 
Gauge 2.10 
86087.27 
49.6 
29.640 
48.6 
29.630 
Mr 
Tay 
r 
t'Lon. | 
Mr. f 
Paylob. | 
1 
2 
3 
13 
14 
15 
6 17 
13 34 
20 51 
33 59 
41 18 
48 38 
6 33 
13 51 
21 06 
34 24 
41 44 
49 04 
h m a 
8 13 42 
9 41 31.17 
Div. 0 
0.98 = 1.176 
0 . 17 = 0.20 
>439.1 
+ 0.62 
+ 0.04 
86072.84 
49.1 
29.635; Capill. + 0.019; Reduction to 32° — 0.052; = 29.602. 
86072.84 
The vibrations in these experiments were as follows. 
With the great weight below : 
April 21. Previous to the vibration in the 
rarefied medium 
April 22. Subsequent to the vibration in 
the rarefied medium 
Vibrations. 
86067-18 
86068.26 
Barom. 29.596 
Barom. 29.31/ 
Mean 
86067-72 Barom. 29.456 
The vibrations in a rarefied medium reduced 
to the same temperature as those in air 
of ordinary density 
86082.60 
Gauge 1 .05 
14.88 28.406 
Difference . . 
