S88 TRANSACTIONS OF THE 



WORK PERFORMED BY THE FOLLOWING 



MINES. 



ENGINE, 

 and the 

 diameter 

 of tiie cylinder. 



Load 

 in 



horse 

 power, 

 on the 

 piston. 



Load 

 per 

 square 



inch, 

 on the 

 piston. 



Length 

 of the 

 stroke, 

 in tlie 

 cylin- 

 der. 



No. 



of 



lifts. 



Depth. 



Diam- 

 eter of 



the 

 pump. 



Time. 



Con- 

 sump- 

 tion of 

 coal in 

 bush- 

 els. 









lbs. 



feet 





fms ft 



ins. 







Ditto 



Pryce's 

 engine, 

 253- inches, 

 single. 



76,8 



22,6 



6 



1 

 1 

 1 



21 3 

 10 2 



84 



13 

 11 



ditto 



696 



DOLCOATH 



76 inches, 

 single. 



368,9 



12,2 



9 



1 



4 

 4 

 1 

 1 

 1 



3 0 

 70 2 

 75 4 

 26 5 

 15 3 



70 



10 



13f 



l^ 

 12 



131 

 13 



A on 



Aug 



to 

 Sep 26 



1818 



Stray- PARK 



60 inches, 

 single. 



173,4 



9,2 



0 



1 



3 

 2 

 1 

 1 

 1 



6 0 

 72 0 

 43 0 

 28 0 

 10 0 

 10 0 



llf 



iH 

 11 



7 

 6 



ditto 





East Wheal 

 Crofty 



80 inches, 

 single. 



192, 



5,73 



10,33 



1 

 2 

 1 

 1 

 1 



20 1 

 47 1 

 19 3 

 8 1 

 24 5 



15 

 9 

 9 



10 



ditto 



736 



North 



ROSKEAR 



New 

 engine, 

 70 inches, 

 single. 



161,6 



6,3 



10 



1 

 1 

 1 



30 0 

 3 3 

 40 0 



16 

 il 

 13 



ditto 



558 



South 



RoSKEAR 



W. Chance 

 engine, 



60 inches, 

 single. 



122,5 



6,5 



9 



2 

 3 

 1 



38 3 

 71 3 

 16 0 



9 

 10 

 9 



ditto 



954 



BiNNER 



Downs 



Wh. Trea- 

 sury 



engine, 

 50 inches, 



single, 



188,4 



14,4 



9,66 



1 

 I 

 1 

 1 

 1 

 1 



24 1 

 41 3 

 15 0 

 15 0 

 83 

 8 1 



8 

 15 

 14 

 IIJ- 



9 



7 



Aug 26 



to 

 Sep 25 



819 



