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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. 



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. 



5^ 



Richard Trevithick. 



54. The earliest non-condensing engine brought into use in Great 

 Britain seems to have been constructed by Richai-d Trevithick and 



