Section 371.

411. By the 2d Table, and in the 2d Column, find the Height of each Barometer, with the Standard-Heat, in Feet and Tenths, corresponding to the Inches and nearest Tenth above and below the Point required: and

First of the upper, at

29.5337:
The Inches and nearest Tenth is above Feet.
29.5, corresp. to

2119.7

 Difference between .5
and .6 above 29 Inches.
and below 29.6, cor. to

2031.5

———

88|.2

Section 373.

412. By the 3d Table, with the Difference 88 Feet, find the Expansion on the remaining Decimals, above 29.5, viz. on .0337, thus:

on

 03 = 26

decimated

26.
003 = 26

2.6
0007 = 62

.62

——

Feet

29.22
From the Height corresponding to

29.5
viz. Feet

2119.7

 Tenths,
subtract the

29.22,

 i. e. Height cor. to

.0338
and there

————

————
remains

2090.4|8,

 the Height cor. to

29.5338
with Expansion of the Standard-Heat.

413. Repeat the 4 last Steps for the lower Barometer, at 30.0168.

1st. The Inches and nearest Tenth is above
30. corresp. to Feet

1681.7

 Difference of .1 above 30 Inches.
and below 30.1 cor.

1595.0

———

86|.7

2d. Then with 86 Feet, find the Expansion on the remaining Decimals, above 30,