568 PROFESSOR DANIELL ON THE WATER-BAROMETER ERECTED 
1832. 
Thermometers. 
t 
Water- 
Barometer. 
Tempera¬ 
ture of 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
Mercury. 
January 1 
o 
44 
o 
44 
Inches. 
399-60 
o 
41 
Inches. 
30-236 
Inches. 
Inch. 
Inch. 
Inch. 
o 
44-5 
44 
399-61 
43 
29-977 
3 
43 
43 
394-88 
45 
29-822 
4 
44 
43-5 
393-58 
43 
29-531 
5 
42-5 
42 
392-88 
41 
29-661 
6 
43*5 
43 
391-45 
46 
29-558 
7 
45 
45 
389-03 
46-5 
29-404 
8 
45-5 
45 
389-14 
49 
29-383 
9 
46 
46 
390-37 
49 
29-484 
10 
48-5 
48 
39M7 
50 
29-566 
11 
50 
50 
393-33 
53 
29-781 
12 
50 
49-5 
393-63 
52 
29-801 
13 
50 
50 
393-62 
49 
29-574 
14 
48 
48 
397-77 
45 
30-119 
15 
46*5 
46 
401-79 
44 
30-436 
16 
45 
45 
402-23 
47 . 
30-467 
17 
47 
47 
400-43 
47 
30-333 
18 
48*5 
48 
400-21 
51 
30-337 
19 
48 
48 
400-42 
48 
30-332 
20 
45 
45 
398-77 
41 
30-173 
21 
46*5 
46 
398-64 
46-5 
30-178 
22 
48 
48 
399-08 
49 
30-235 
23 
48-5 
48 
399-65 
47 
30-284 
24 
47 
47 
399-18 
49 
30-225 
25 
49 
49 
393-79 
50 
29-808 
26 
48 
48 
394-18 
48-5 
29-844 
27 
49 
48-5 
395-10 
46 
29-905 
28 
45-5 
45 
399-47 
43 
30-235 
29 
47 
47 
398-53 
48 
30-184 
30 
48 
48 
399-93 
48 
30-317 
31 
49-5 
49 
397-03 
50 
30-146 
Means. . . 
46-8 
46-6 
396-38 
47 
29-979 
29-094 
•885 
•364 
•521 
