CHAP. IX.] 



THE LOCOMOTIVE. 



465 



and transmitting machinery, the adhesion of the wheels to the rails 

 were the objects of arrangements it would take too long to describe. 

 The substitution of the tubular for the ordinary boiler, with a draught 



FIG. 313. The " Rocket." 



produced by a jet of steam, produced a decided revolution in the appli- 

 cation of steam-engines to locomotion on iron ways. The invention 



H H 



