EBULLITION. 



Process of boiling. — Vaporization and Condensation.— L atent Heat of Steam. — Experiments of 

 Black. — Effect of atmospheric Pressure on boiling Point. — Ebullition under increased Pressure — 

 under diminished Pressure. — Relation between the Barometer and boiling Point. — Effect of the 

 Altitude of the Station of the boiling Point. — Elasticity of Steam. — Its Lightness. — Sum of the 

 latent and sensible Heat always the same. — Effect of the Compression of Steam without Loss of 

 Heat. — Steam cannot be liquefied by mere Pressure. — Boiling Points and latent Heat of other 

 Liquids. — Condensation of Vapor. — Principle of the Steam-Engine. — Nature of permanent Gas- 

 es. — Examples of the Application of the Properties of Steam. 



