96 POLE STEAM-ENGINE. 



three times that sum would riot pay for the Watt engine. 

 The reported duty of Watt's Herland engine was twenty- 

 seven millions ; and if the trial was with his ordinary 

 bushel of 112 Ibs. of coal, the duty would only be equal 

 to twenty millions with 84 Ibs. of coal, which consti- 

 tuted the Cornish bushel. 



Trevithick's pole high - pressure steam-engine did 

 fifty-seven millions ; in other words, performed the same 

 work as the Watt engine with less than half of the daily 

 coal. This large economy led to orders for many 

 engines, on his promise that they should cost much less 

 than those of Watt of equal power, and should perform 

 the work with one-third of the coal. Some believed 

 him, though others were stony-hearted, and as obstinate 

 as donkeys. 



[Rough draft.] 

 " MR. PHILLIP, " PENZANCE, 8th March, 1816. 



" Sir, I long since expected to have heard from you that 

 my agreement with the Herland adventurers was executed. I 

 have in every respect fulfilled my part of the engagement with 

 the adventurers, and expect that they will do the same with 

 me. The engine continues to work well. Every person that 

 has seen it, except Joseph Price, A. Vivian, Woolf, and a few 

 other such like beasts, agrees that it is by far the best engine 

 ever erected. Its performance tells its effects, in spite of all 

 false reports. 



" Joseph Price and A. Vivian reported that the engine was 

 good for nothing, that it would not do four millions, and that 

 at the next Tuesday meeting they would turn it idle. On the 

 evening before the meeting they met at Camborne for that 

 purpose. 



" Captain A. Vivian did not attend the meeting. I could 

 not help at the meeting threatening to horsewhip J. Price for 

 the falsehoods that he with the others had reported. 



"I hear that he is to go to London to meet the London 

 committee on Monday. I hope the committee will consider 



