IN THE HALL OF THE ROYAL SOCIETY. 
565 
1831. 
Thermometers. 
Water- 
Barometer. 
Tempera¬ 
ture of 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
Mercury. 
Inches. 
Inches. 
Inches. 
Inch. 
Inch. 
Inch. 
October 1 
63*5 
63-5 
384-11 
63-5 
29*236 
2 
63 
62-5 
384-94 
62 
29*269 
3 
62 
62 
389*45 
60 
29*610 
4 
62 
62 
390-52 
61 
29*689 
5 
61 *5 
61 
392-07 
59 
29*805 
6 
59-5 
59*5 
393-23 
59 
29*874 
7 
62 
61-5 
390-60 
63 
29*711 
8 
63 
62-5 
389*55 
61-5 
29*658 
9 
61 
60-5 
389-73 
57 
29*613 
10 
59*5 
60 
399-31 
59 
29*558 
11 
61 
61-5 
389*92 
61 
29*629 
12 
60 
60-5 
390-61 
61 
29*694 
13 
60-5 
60-5 
390-00 
60 
29*641- 
14 
63 
62-5 
388-20 
64 
29-538 
15 
62 
62 
390-61 
63 
29*605 
16 
60 
60-5 
395-63 
60 
30*091 
17 
58-5 
58 
398-59 
54-5 
30-288 
18 
60 
60 
398-98 
59 
30-354 
19 
60-5 
60 
397*06 
59 
30-213 
20 
61 
60-5 
393-84 
59 
29-937 
21 
60 
60 
392-94 
58 
29-866 
22 
57 
57 
395-53 
52 
30-007 
23 
59 
59 
393-77 
60 
29-918 
24 
59 
59 
395-23 
57*5 
30-031 
25 
57*5 
58 
393-34 
56-5 
29*878 
26 
59 
59 
388-33 
59-5 
29*477 
27 
58-5 
59 
390-75 
58-5 
29*672 
28 
58 
58 
394-47 
57 
29*946 
29 
57-5 
58 
398-09 
57*5 
30-260 
30 
56*5 
56-5 
398-53 
52-5 
30-265 
31 
56-5 
56*5 
397*22 
56 
30-165 
Means.... 
60 
60 
392-75 
59 
29-824 
28-827 
*997 
•560 
*437 
4 D 
MDCCCXXXII 
