原文 (英语)

JAMES W. STEELE CONTENTS THE STORY OF STEAM. What Steam is.--Steam in Nature.--The Engine in its earlier forms.--Gradual explosion.--The Hero engine.--The Temple-door machine.--Ideas of the Middle Ages.--Beginnings of the modern engine.--Branca's engine.--Savery's engine.--The Papin engine using cylinder and piston.--Watt's improvements upon the Newcomen idea.--The crank movement.--The first use of steam expansively.--The "Governor."--First engine by an America