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"For many purposes compressed air is preferable to steam or other gas for use as a motive power. In such cases air compressors are used to compress air. These are made in many forms, but the most common one is to place a cylinder, called the air cylinder, in front of the crosshead of a steam engine, so that the piston of the air cylinder can be driven by attaching its piston rod to the crosshead in a manner similar to a steam pump." —Hallock 1905

Air Compressor

"For many purposes compressed air is preferable to steam or other gas for use as a motive power. In…

"Regency Style; motive from Hotel Soubise, Paris ... in the history of the fine arts in France, a name given to work which corresponds to the Regency (1715-23) of Philip of Orleans during the minority of Louis XV." -Whitney, 1911

Regency Style

"Regency Style; motive from Hotel Soubise, Paris ... in the history of the fine arts in France,…

"Shell-work, Hôtel Cluny, Paris. In decorative design, especially carved or modeled, a motive which imitates or is suggested by the forms of shells." -Whitney, 1911

Shell Work

"Shell-work, Hôtel Cluny, Paris. In decorative design, especially carved or modeled, a motive…

"The steam engine is a powerful device for utilizing the energy involved in the elasticity and expansive force of steam as a motive power. It is a real heat engine, transforming heat into mechanical energy." -Avery 1895

Steam Engine

"The steam engine is a powerful device for utilizing the energy involved in the elasticity and expansive…