IN THE HALL OF THE ROYAL SOCIETY, 
551 
Register I. 
Of the Temperature and Height of the Water and Mercurial Barometers. 
1830 . 
Hour. 
Thermometers. 
Water- 
Barometer. 
Tempera- 
ture of 
Mercury. 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
A.M. 
O 
Inches. 
Inches. 
Inches. 
Inch. 
Inch. 
Inch. 
July 31 
3 
74-5 
74-6 
396-605 
73-8 
29-979 
29-110 
•869 
•877 
+ •008 
Aug . 1 
9 
67*3 
67-7 
398-111 
67-2 
29-927 
29-221 
•706 
•699 
+ •007 
- 
10 
68-0 
68-3 
397-728 
67-8 
29-924 
29-192 
•732 
•722 
+ •010 
- 
3 
70-5 
70-7 
396-327 
71-7 
29-879 
29-090 
•780 
•770 
+ •010 
2 
12 
66-2 
66-6 
396-158 
65-8 
29-772 
29-077 
•695 
•678 
+ •017 
3 
9 
63-6 
63-7 
399-243 
63-6 
29-943 
29-304 
•649 
•615 
+ •034 
4 
3 
68*7 
68-7 
397-661 
69-3 
29-921 
29-188 
•733 
•733 
+ •000 
5 
2 
69-6 
70-2 
396-413 
69-7 
29-869 
29-097 
•772 
•770 
+ •002 
27 
1 
6l-5 
61-8 
395-025 
64-2 
29-636 
28-994 
•642 
•594 
+ •048 
28 
9 
58-2 
58-6 
391-755 
58-2 
29-337 
28-754 
•583 
•526 
+ •057 
Means . . 
66-8 
67-1 
396-503 
67-1 
29-809 
29-103 
•706 
■699 
+ •007 
Aug . 28 
12 
58-8 
58-2 
391-732 
59-4 
29-350 
28-753 
•597 
•543 
+ •054 
— 
3 
59-6 
60-0 
392-294 
60-4 
29-396 
28-794 
•602 
•560 
+ •042 
29 
9 
57-8 
59-2 
398-837 
59-0 
29-854 
29-274 
•580 
•526 
+ •054 
— 
3 
59-8 
60-5 
399-333 
60-8 
29-913 
29-310 
•603 
•560 
+ •043 
30 
9 
57-8 
58-6 
403-059 
57-6 
30-157 
29-584 
•573 
•526 
+ •047 
— 
1 
59-4 
60-2 
402-396 
60-8 
80-150 
29-535 
•615 
•560 
+ •055 
— 
3 
60-6 
61-2 
401-993 
60-6 
30-135 
29-506 
•629 
•568 
+ •061 
31 
9 
57-8 
58-8 
403-959 
57-4 
30-228 
29-650 
•578 
•526 
+ •052 
— 
3 
60-6 
61-8 
402-696 
61-0 
30-206 
29-557 
•649 
•577 
+ •072 
Sept . 1 
9 
58-8 
59-2 
404-417 
58-5 
30-273 
Means . . 
. . 
58-9 
59-7 
400-071 
59-5 
29-966 
29-364 
•602 
•543 
+ •059 
Sept . 1 
3 
62-0 
63-0 
402-886 
63-2 
30-244 
29-571 
•673 
•605 
+ •068 
2 
9 
57-8 
58-4 
402-742 
56-0 
30-149 
29-560 
•589 
•526 
+ •069 
- 
3 
61-0 
62-0 
400-246 
63-0 
30-033 
29-377 
•656 
•594 
+ •062 
- 
6 
61-8 
62*0 
399-186 
63-0 
29-974 
29-300 
•674 
•594 
+ •080 
3 
9 
58-2 
58-5 
397-739 
58-2 
29-837 
29-192 
•645 
•526 
+ •119 
- 
3 
60-0 
60-6 
396-952 
61-4 
29-771 
29-136 
•635 
•560 
+ •075 
4 
9 
58-5 
59-4 
399-277 
58-2 
29-890 
29-296 
•594 
•534 
+ •060 
- 
3 
60-2 
60-8 
398-895 
60-4 
29-959 
29-278 
•681 
•560 
+ •121 
5 
9 
57-5 
58-0 
396-239 
56-2 
29-672 
29-083 
•589 
•526 
+ •063 
- 
3 
60-6 
60-8 
395-293 
61-3 
29-656 
29-014 
•642 
•568 
+ •074 
Means . . 
. . 
59-7 
60-3 
398-945 
60-0 
29-918 
29-282 
•636 
•560 
+ •074 
Sept . 6 
9 
58-2 
58-8 
394-135 
58-8 
29-532 
28-916 
•616 
•534 
+ •082 
- 
3 
59-2 
59-8 
392-911 
60-0 
29-457 
28-781 
•676 
•551 
+ •125 
7 
9 
58-8 
39-2 
396-356 
59-2 
29-682 
29-092 
•590 
•543 
+ •047 
- 
3 
59-5 
59-8 
396-614 
59-6 
29-700 
29-111 
■589 
•551 
+ •038 
8 
9 
38-1 
58-6 
400-057 
58-2 
29-949 
29-364 
•585 
•526 
+ •059 
- 
3 
60-8 
61-3 
399-675 
60-3 
29-962 
29-335 
•627 
•577 
+ •050 
9 
9 
57-0 
57-6 
398-328 
56-0 
29-819 
29-236 
•583 
•508 
+ •083 
- 
3 
58-2 
38-2 
397-177 
57'8 
29-762 
29-152 
•610 
•526 
+ •084 
Means . . 
58-7 
59-1 
396-906 
58-7 
29-732 
29-132 
•600 
•543 
+ •057 
4 b 2 
