——The world’s ruled by Steam,
And all the men and women are its subjects:
It guides their movements and their whereabouts;
And this steam, in its time, plays many parts,
Its acts being Seven Ages. At first, the kettle,
Hissing and sputtering on a kitchen hob,
And then Newcomen’s Engine, to its piston,
By atmospheric pressure, giving force
Imperfectly to pump; Then Watt’s condenser;
More economic, with its stuffing box