554 PROFESSOR DANIELL ON THE WATER-BAROMETER ERECTED 
1S30. 
Thermometers. 
Water- 
Barometer. 
Tempera- 
ture of 
Mercurial 
Barometer. 
Water- 
Barometer 
reduced to 
Mercury. 
Difference. 
Elasticity 
of Vapour. 
Difference. 
In. 
Out. 
Mercury. 
Nov. 1 
5t) 
5& 
Inches. 
401-18 
O 
57 
Inches. 
30-066 
Inches. 
29-446 
Inch. 
•620 
Inch. 
•492 
Inch. 
•128 
o 
57 
56-5 
401-38 
57 
30-095 
29-461 
•634 
•508 
•126 
3 
56-5 
56-5 
398-75 
57-5 
30-009 
29-268 
•741 
•500 
•241 
4 
57 
57 
397-07 
56 
29-773 
29-145 
•628 
•508 
•120 
5 
56 
55-5 
399-11 
56-5 
29-897 
29-294 
•603 
•492 
-111 
6 
57 
57 
393-90 
58 
29-574 
28-912 
•662 
•508 
•154 
7 
57-5 
57 
388-51 
58 
29-093 
28-516 
•577 
•517 
•060 
8 
57 
57 
394-79 
54-5 
29-602 
28-978 
•624 
•508 
•116 
9 
55 
54 
398-74 
52 
29-855 
29-266 
•589 
•468 
•121 
10 
53 
53 
397-55 
53 
29-772 
29-180 
•59 2 
•444 
*148 
11 
55-5 
55 
394-61 
55 
29-498 
28-964 
•534 
•476 
*058 
12 
53 
53 
399-61 
44-5 
29-913 
29-332 
•581 
•444 
•137 
13 
51 
51 
399-24 
52-5 
29-863 
29-304 
•559 
•414 
•145 
14 
55 
55 
394-90 
54-5 
29-574 
28-985 
•589 
•476 
•113 
15 
54-5 
54 
394-60 
54 
29-492 
28-964 
•528 
•460 
•068 
16 
55-5 
55 
391-38 
55 
29-347 
28-727 
•620 
•476 
•144 
17 
55 
55 
392-66 
54 
29-420 
28-821 
•599 
•476 
•123 
18 
51 
51 
397-43 
54 
29-708 
29-171 
•537 
•414 
•123 
19 
52 
52*5 
402-97 
50 
30-156 
29-578 
•578 
•428 
•150 
20 
50-5 
50 
401-41 
51 
30-022 
29-463 
•559 
•400 
•159 
21 
50 
49 
400-01 
52 
29-904 
29-367 
•537 
•394 
•143 
22 
54 
53 
396-61 
54 
29-596 
29-111 
•485 
•468 
•017 
23 
53 
53 
402-18 
52 
30-115 
29-520 
•595 
•444 
•151 
24 
50*5 
51 
406-07 
50 
30-380 
29-805 
•575 
•407 
•168 
25 
47-5 
47 
406-68 
47 
30-368 
29-850 
•518 
•364 
•154 
26 
49 
49 
403-23 
47-5 
30-153 
29-597 
•556 
•388 
•168 
27 
48-5 
49 
398-00 
49 
29-760 
29-213 
•547 
•388 
•159 
28 
46*5 
46 
394-91 
48-5 
29-485 
28-986 
•499 
•352 
•147 
29 
49 
48 
398-15 
50 
29-741 
29-223 
•518 
•382 
•136 
30 
49 
49 
399-71 
50 
29-884 
29-3.39 
•545 
•388 
•157 
Means . . . . 
53-1 
52-8 
398-18 
52-8 
29-770 
29-226 
•544 
•444 
•100 
