Corrections 
302 Captain Sabine’s comparison of barometrical and 
July 19-20. After midnight. Weather clear and fine. 
App. time. 
12.30 
Observatory, Sabine. 
Barom. Merc. Air. 
2 9-679 39-4 35 
Point of 
Deposition. 
34-5 
Barom. 
Hill, 
Merc. 
Foster. 
Air. 
Point 
Deposi 
12-35 
• 
• 
• 
• 
28.054 
42 
38.5 
33 
J2. 4 5 
. 
• 
• 
• 
28.041 
42.8 
39-5 
34 
12.50 
29.673 
39-5 
36 
34-5 
• 
• 
• 
• 
i3-°5 
• • 
• 
• 
• 
28.024 
43-5 
39-8 
35 
13.10 
29.667 
4o 
37 
34-7 
• 
• 
. 
. 
13-25 
• 
• 
• 
• 
28.036 
44-5 
4° 
35 
13.30 
29.659 
39.8 
35-7 
35-2 
• 
• 
• 
• 
13»45 
• 
• 
• 
• 
28,021 
45 
40.8 
36 
13-5° 
29.652 
39.8 
37 
35-3 
• 
• 
14.05 
• 
• 
• 
• 
28.037 
44.9 
40.8 
35| 
14.10 
29.649 
39-2 
37-6 
36 
• 
• 
• 
• 
29.6932 
39-6 
36.4 
35 
28.0355 
43- 8 
39-9 
J5j 
Reduction to 32 0 
—.0197 
— 
— 
—.0281 
— 
Capacity . . . 
—.0570 
—•0443 
Capillary action . 
+ .0280 
+ .0880 
•Index 
+ .1960 
- - - 
True Barom. heights 29.8108 
28.05 11. 
Result. Height of the Cone 1635.4 feet. 
July 21. A.M. Calm and clouded on the Hill ; light rain 
at the Observatory. 
Observatory, Foster. 
App. time. 
Barom. 
Merc. 
Air. 
10.30 
29.328 
41.8 
38.5 
11. 
29.325 
41.9 
39-2 
11.30 
29.323 
42 
4° 
12. 
29.319 
42.2 
40 
12.30 
29.317 
42 
4i 
29.3224 
42 
39-7 
Reduction to 3 2° . 
— .0248 
— 
Capacity . . . 
— .0885 
Capillary action 
+ .0280 
Index .... 
+ .1960 
or +.1845 
True Barom. heights 29.4331 or 29.4216 
Hill, 
Sabine. 
Point of 
Deposition. 
Barom. 
Merc. 
Air. 
Rain 
27.673 
39.8 
39- 
— 
27.666 
38.8 
38.2 
— 
27.663 
39-2 
39- 
— 
27.660 
4° 
38.8 
— 
27.661 
4i-3 
39-8 
39-7 
27.6646 
39-8 
39 
— 
— .0186 
— 
■ — .0510 
-f .0880 
27.683. 
Point , 
Deposit n 
39 Ra 
3 6 - S ! 
36.2 
37 
37 2 1 
37- z ! 
Result. Height of the Cone 
$ Index Corr. +.196 = 1652.06 feet. 
(Index Corr. -M 8 45 = 16417 feet. 
