Page:Popular Science Monthly Volume 12.djvu/276

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THE POPULAR SCIENCE MONTHLY.

dollars that he could build a "steam-wagon" that should excel in speed the swiftest horse that could be matched against it.

Evans's connection with steam-navigation will be referred to when considering that subject.

PSM V12 D276 Oructor amphibolis 1804.jpg
Fig. 28.—"Oructor Amphibolis," 1804.

To this brief sketch of Evans's inventions it can only be added that he devised the flue-boiler, now generally called the Cornish, and used it to furnish steam to his engines.

PSM V12 D276 Richard Trevitchick.jpg
Richard Trevithick.

54. The earliest non-condensing engine brought into use in Great Britain seems to have been constructed by Richard Trevithick and