USE AND PRACTICE OF THE FIRST TABLE, IN THE FIRST EXAMPLE.
The use.
Section 357. TO find the Expansion of Quicksilver, and of the barometric Tube in which it is contained: or, in other Words, to find the Point to which the Quicksilver will rise in the Tube, (in Parts of an Inch) with a given additional Temperature, on Farenheit’s Scale.
The Question in the first Example is, (Ph. Tr. for 1777, Page 578;)
To find the Expansion that arises, with the Addition of 4 Degrees of Heat, on the colder Barometer resting at Inches 25 .19 Tenths, in order to give it an Expansion equal to that of another Barometer, 4 Degrees warmer than the former: the Temperature of each Barometer, being indicated by its respective attached Thermometer.
N. B. During the Application of the first Table, the Investigation moves forward two Steps only, viz. the 4th and 5th.
The 4th Step, applied in the first Example.
358. The Order to be observed in finding the Expansion of the Quicksilver, with 4 Degrees on Inches 25 .19 Tenths of the Barometer.
1st. Find the Expansion, With 4° on 25 Inches only.
Then in order to obtain with 4° on .19, begin