Page:Popular Science Monthly Volume 12.djvu/553

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THE GROWTH OF THE STEAM-ENGINE.

necessary to train up a body of engine-drivers who should be capable of managing these new engines, for they required the exercise of a then unprecedented amount of care and skill. Finally, with the accomplishment of these two requisites to success, must simultaneously occur the enlightenment of the public, professional as well as non-professional, in regard to their advantages.

Thus it happens that it is only very recently that the screw has

PSM V12 D553 Modern steamship the germanic.jpg
Fig. 59.—The Modern Steamship: The Germanic.

attained its proper place as an instrument of propulsion, and has only now driven the paddle-wheel almost out of use, except in shoal water.

Now our large screw-steamers are of higher speed than any paddle-steamers on the ocean, sometimes crossing the Atlantic from New