IN THE HALL OF THE ROYAL SOCIETY. 
56.3 
1831. 
Thermometers. 
Water- 
Barometer. 
Tempera¬ 
ture of 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
Mercury. 
August 1 
o 
O 
Inches. 
o 
Inches. 
Inches. 
Inch. 
Inch. 
Inch. 
2 
67 
67 
391-40 
66-5 
29-831 
3 
67-5 
68 
390-84 
67 
29-818 
4 
67 
67 
390-32 
66 
29-756 
5 
68-5 
69 
398-14 
68 
29-603 
6 
67 
66-5 
399-34 
64 
29-655 
7 
66 
66-5 
398-75 
66 
29-603 
8 
66 
66 
390-45 
64 
29-739 
9 
68 
68 
391-54 
67 
29-870 
10 
68 
68 
392-50 
65-5 
29-950 
11 
67 
67 
394-74 
64-5 
30-072 
12 
66 
66 
394-64 
63 
30-083 
13 
66-5 
67 
393-30 
64-5 
30-003- 
14 
66 
66 
392-89 
63 
29-946 
13 
65-5 
65 
393-95 
62 
30-026 
16 
66 
66 
394-10 
63 
30-061 
17 
65 
65*5 
393-46 
64 
29-992 
18 
64-5 
64 
392-67 
60 
29-895 
19 
62 
62 
389-78 
61 
29-646 
20 
62 
62 
388-25 
60-5 
29-516 
21 
63-5 
64 
393-94 
63-5 
29-986 
22 
63 
62-5 
396-87 
6l 
30-266 
23 
64-5 
64-5 
395-26 
63-5 
30-125 
24 
65*5 
65 
392-66 
63 
29-925 
25 
64-5 
64-5 
389-00 
63 
i-0 
cc 
26 
62 
62 
393-03 
59-5 
29-885 
27 
63-5 
64 
392-45 
64 
29-889 
28 
65 
64-5 
393-91 
60-5 
30-004 
29 
63 
62-5 
395-89 
59"5 
30-141 
30 
64*5 
64*5 
394-55 
62 
29-876 
31 
66 
66 
391-42 
66 
29-880 
Means. . .. 
65-3 
65-3 
393-33 
62-0 
29-889 
28-870 
1-019 
•657 
•462 
