POLE STEAM-ENGTNE. 07 



J. Price's report as from a disappointed man. It is reported 

 that he has bought very largely in Woolf 's patent, which now 

 is not worth a farthing, besides losing the making my castings, 

 which galls him very sorely. 



" The water sinks regularly 20 fathoms per month, including 

 every stoppage. On Monday next I expect they will be putting 

 down the second lift. The water rises about 8 inches per hour 

 when the engine is idle, and when at work will sink it again at 

 the same rate, showing that the engine is equal to double the 

 growing stream. When drawing from the pool the sinking is 

 not much above 4 inches per hour, which shows that the water 

 drains from a great distance from the country. The engine is 

 going fourteen strokes per minute, 10-feet stroke, 14^-inch box. 

 When Herland worked last they drew a 14-inch box, 7-feet 

 stroke, twelve strokes per minute in winter, and seven strokes per 

 minute in summer. Therefore it appears that the winter water 

 is about from seven to eight strokes per minute, and the summer 

 water from four to five strokes per minute for this engine. 



"The engine has forked faster the last week than she did 

 before. I think that the great quantity of water that was 

 laying round the mine at the surface is nearly drawn down, 

 and that as we get down to a closer ground the drainage will 

 not be so much. If we have dry weather the water will, at the 

 next shallow level, fall off two strokes per minute before the 

 next lift is in fork. If it continues the same we can continue 

 to sink 20 fathoms per month, exclusive of the time it will take 

 to fix the lifts. As we get down the house of water will lessen 

 considerably. The expense of the engine is about 100Z. per 

 month. The sumpmen and others attending on the forking 

 the water, about 1007. per month more. They have all the 

 materials on the mine for the pit-work, therefore a very trifling 

 sum will bring the water down to the 60-fathom level, when the 

 mine will pay her own expense. 



" I will thank you for an account of the meeting. 



ft Your obedient servant, 



"K. TREVITHICK." 



