CHAPTER LXXIIII.
USE AND PRACTICE OF THE FOURTH TABLE, IN THE FIRST EXAMPLE.
The use.
Section 379. TO shew in Feet, and Tenths, what is the Expansion of Air on each thousand Feet, from 1000 to 9000 Feet, with each Degree of Temperature from 1 to 100 Degrees, on Farenheit’s Scale.
The practice.
The 12th Step applied in the first Example.
380. For the Expansion of Air with 11 Degrees of Heat on 4016.8 Feet, look in the fourth Table, with 11 in the left Hand vertical Column of Temperature, and (first) on 4000 Feet, along the upper Line: the Place of Meeting gives the Expansion of the Air, with 11 Degrees on 4000 Feet: viz. 106.92.[126]
Next; look with 11 Degrees, and (as there is a Cypher only in the Place of Hundreds) on 10, (viz. of the 16 Feet) call the 10, a 1000; the Place of Meeting, or Answer is 26.73:
Thirdly; with 11, on 6, (viz. of the 16,) calling it 6000; the Answer is 160.38:
Fourthly; with 11, on 8, (viz. the .8,) and the Answer is 213.84.