c o N T E N T 8.

Calculations relating to the Height of the At -mofphere , 14.6—150

The same determined by Agronomical Expertinenty 1^0

'The Weight of the Atmosphere on a SquareInch computed , 150, 151

--- on the Surface of the whole Earth,

*5 1

A Calculation of the Thickness of a MetallineGlobe that Jhall float in Air , 152—-155

Fifty Experiments on the Air-Pump, fljewingthe Gravity , Elasticity, and all other Pro-perties of the Air, 155—170

Of Condensation of Air by Experiment,

17°, 171

O/'Papin’s Digester, 171, 172

Of the Diving-Bell and its Theory , 175—180Improved by Mr. TrieWald, 179

Of Thermometers and their Theory,

j 80, 18 r

Of Newton’s Oil and Spirit Thermome-ters, 181, 182

Of Mercurial Thermometers in general.

S

182

4