hi the Qjiantities of Water afforded hy Springs. 291 



which we had to contend, in the first part of this inquiry, it 

 is obvious that the present one presents many others, some of 

 which are to me insurmountable. I take as examples situated 

 in clay slate, Huel Rose, surface 35 ? fathoms above the sea ; 

 Huel Hope, surface 50 ? fathoms above that level; and Poldice, 

 surface from 28 to 40 fathoms above the sea. In granite the 

 only case I shall adduce is Huel Reeth, of which the surface 

 is about 66 fathoms above sea markf. 



t Phil. Maj;. and Annals, N.S. vol.ix. p. 171. 



X I n)akc two Tables, lV^an(i IV'-. because it appeared that the first two 

 and the x'cond two formed series very distinct, so far as depth, at least. 

 The rain liavinj; been given in Tables I. and II., I do not repeat it. 



§ Phil. Ma'.', and Annals, N.y. vol. ix. p. 172. The columns mean, depth 

 of the mine, in fathoms ; and quantity nf water drawn out, in cubic feet. 

 2 l»2 



