570 RROFESSOR DANIELL ON THE WATER-BAROMETER ERECTED 
1 832. 
Thermometers. 
Water- 
Barometer. 
Tempera- 
ture of 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
Mercury. 
March 1 
O 
44 
44-5 
Inches. 
399-85 
O 
46 
Inches. 
30-280 
Inches. 
29-349 
Inch. 
•931 
Inch. 
•328 
Inch. 
+ •603 
2 
47 
47 
399-83 
49 
30-299 
29-348 
•951 
•364 
+ •587 
3 
46 
46-5 
399-82 
47 
30-305 
29-346 
•959 
•352 
+ •607 
4 
48 
47-5 
396-26 
48 
30-018 
29-085 
•933 
•376 
+ •557 
5 
48-5 
48 
393-23 
49-5 
29-770 
28-864 
•906 
•376 
+ •530 
6 
47 
46-5 
394 16 
49 
29-829 
28-916 
•913 
•364 
+ •549 
7 
48 
48 
388-58 
49 
29-391 
28-521 
•870 
•376 
+ .494 
8 
45 
45 
390-14 
45 
29-486 
28-636 
•850 
•340 
+ •510 
9 
44-5 
44 
396-73 
45 
30-008 
29-120 
•888 
•328 
+ •560 
10 
45 
45 
401-05 
48 
30-377 
29-437 
•940 
•340 
+ •600 
11 
44 
44 
398-98 
43-5 
30-205 
29-285 
•920 
•328 
+ •592 
12 
44 
44-5 
397-03 
48 
30-042 
29-142 
•900 
•328 
+ •572 
13 
45 
45 
394-79 
48 
29-920 
28-978 
-942 
•340 
+ •602 
14 
47 
46-5 
390-16 
49 
29-507 
28-637 
•870 
•364 
+ •506 
15 
46-5 
46 
388-45 
49-5 
29-360 
28-512 
•848 
•352 
+ •496 
16 
47-5 
47 
393-83 
43 
29-816 
28-907 
•909 
•364 
+ •545 
17 
50 
49-5 
388-53 
50-5 
29-415 
28-518 
•897 
•400 
+ •497 
18 
49 
48-5 
389-91 
49 
29-503 
28-619 
•884 
•388 
+ •496 
19 
48 
48 
394-17 
47-5 
29-847 
28-932 
•915 
•376 
+ •539 
20 
50 
50 
389-41 
50 
29-492 
28-583 
•909 
•400 
+ •509 
21 
50 
50 
395-59 
51-5 
29-995 
29*036 
•959 
•400 
+ •559 
22 
51 
50-5 
397-12 
52-5 
30-128 
29-148 
•980 
•414 
+ •566 
23 
52 
52 
394-76 
54 
29-961 
28-975 
•986 
•428 
+ •558 
24 
52 
51*5 
393-15 
47-5 
29-818 
28-857 
•961 
•428 
+ •533 
25 
47‘5 
47-5 
397-31 
50-5 
30-117 
29-162 
•955 
•364 
+ •591 
26 
48 
48 
397-86 
51 
30-164 
29-203 
.961 
•376 
+ •585 
27 
50 
50 
395-87 
47-5 
30-010 
29-057 
•953 
•400 
+ •553 
28 
1 48 
48-5 
396-94 
52 
30-090 
29-135 
•955 
•376 
+ '579 
29 
49 
49 
395-68 
47-5 
29-989 
29-042 
•947 
•388 
+ •559 
30 
49-5 
49 
394-89 
51-5 
29*972 
28-985 
•987 
•388 
+ •599 
31 
50 
50 
393-31 
52 
29-824 
28-869 
•955 
•400 
+ •555 
Means. . . . 
| 47-8 
47-6 
394-75 
48-7 
29-901 
28-974 
•927 
•376 
+ •551 
