194 THE WATT AND THE TREVITHICK ENGINES. 



of the committee of management in these modern 

 times, has served during that long period to illustrate 

 the progress of the steam-engine, and still in active 

 operation, was thus spoken of in ' The Times ' of Dec. 

 18th, 1871 : "This old and extraordinary mine is now 

 raising about 100 tons of tin every month, worth from 

 8000J. to 9000/." 



