154 THE WATT AND THE TREVITHICK ENGINES. 



to the inch; it worked very well. There were several others in 

 the county at that time something like it. It was made at the 

 Neath Abbey Works in Wales." 1 



These boilers were of the kind first tried in Cornwall 

 about 1800. The oval tube in the Kensington model of 

 1798 continued in use in Cornwall for many years. The 

 cast-iron outer casing was soon abandoned, though one 

 of them in Wales remained in work fifty years, using 

 steam of 60 Ibs. to 100 Ibs. to the inch. 



" MY DEAR JANE, " HAYLE FOUNDRY, August 26th, 1810. 



" I saw Captain Andrew Yivian on Wednesday, who told 

 me that he had been offered 150Z. a year to inspect all the 

 engines in the county, and report what duty they were doing, 

 in order to stimulate the engineers. He declined accepting it, 

 having too much to do already ; and he thought it would be 

 worth Trevithick's notice, as it would not take him more than a 

 day or two in a month. 



" I remain, my dear Jane, 



" Yours sincerely, 



"H. HARVEY. 



" I wrote this letter on Sunday, with an intention of sending 

 it then, but thought it best to wait until this day, in hopes of 

 hearing the determination of Government in your favour ; but 

 your letter has arrived without the desired information. All 

 that I can now say is, to desire that Trevithick will make up his 

 mind to return to Cornwall immediately. " H. H." 



The application to the Government for remuneration 

 for benefits conferred on the public was unsuccessful. 

 The office of registrar of Cornish engines was unsuitable ; 

 fortunately for mining interests, illness obliged Trevi- 

 thick to revisit his native county, for by the increased 

 power and economy of his engines Dolcoath Mine, so 



1 Recollections of Captain G. Eustace, engineer, residing at Hayle, 1868. 



