The Height corresponding to Inches 24.1892 Tenths of the upper Barometer, with the Standard Temperature of 31.24; for which sole Purpose the 2d. Table is calculated.
Repeat the last Process with the lower Barometer, resting at 28.1318, gradually, thus:
Section, 401.
By the 2d. Table, find the Height corresponding to 28.1, which is 3386.61; then with the Difference 92.6 (rejecting the .6) find the corresponding Height, by the 3d. Table for the remaining Tenths or Decimals of an Inch, above 28.1, viz.
| .03 | 28.0 |  | = Feet 29.6 Tenths. |
| .001 | .9 | ||
| .0008 | .7 |
Section 402.
| Which Height subtract from | 3386.6 |
| 29.6 | |
| ——— | |
| And there remains, | 3357.0 |
viz. the Height in Feet corresponding to Inches 28.1318 Tenths of the lower Barometer, with the Standard Temperature of 31.24, for which sole Purpose the 2d. Table is calculated.
Section 403.
Subtract the Height in Feet, corresponding to Inches of Quicksilver in the upper Barometer,