With 1° above 4°, on 24, i. e. the 5th°: then,
With .1 Tenth above 4°, on 24: then
With .6 Tenths above 4°, on 24.
2d Part of Case the 2d. To find the Expansion,
With .6 Tenths above 4° of Heat on .178 Tenths above 24 Inches: to be done thus:
The expansion with 4°, on .178 Tenths above 24 Inches, being once found; divide it by 4: and the Quotient is the Expansion with 1° above 4°, on .178 Tenths of an Inch above 24 Inches.
Then for the Expansion with .1 Tenth above 4°, on .178 Tenths above 24 Inches; add a Cypher and decimal Point to the left of the same Quotient.
Then for the Expansion with .6; multiply that Sum into .6, and add a Cypher and decimal Point.
The Answer is the part of an Inch, to which .6 Tenths of a Degree above 4° of Heat, on .178 Tenths of an Inch above 24 Inches, raises the Barometer.
It is true, the part is so minute as to be rejected: yet the Mode of Proceeding, in order to investigate the Expansion with Precision, is proper to be retained.