| A Table shewing the Altitude, to given heights of the Mercury . | |
|---|---|
| 2000 | 27 86 |
| 3000 | 26 85 |
| 4000 | 35 87 |
| 5000 feet | 24 93 |
| 1 mile | 24 67 |
| 2 | 20 29 |
| 3 | 16 68 |
| 4 | 13 72 |
| 5 | 11 28 |
| 10 | 4 24 |
| 15 | 1 60 |
| 20 | 0 95 |
| 25 | 0 23 |
| 30 | 0 08 |
| 40 | 0 012 |
UPON these Suppositions it appears, that at the height of 41 Miles the Air is so rarified, as to take up 3000 times the Space it occupies here, and at 53 Miles high it would be expanded above 30000 times; but it's