362 Mr. Kenwood's Survey of the Mines of Cornwall. 



In the preceding columns the " direction" is with regard 

 to t7-iie north, and the dip in deviation from the horizon. 

 When in its horizontal course one vein or lode is intersected 

 by another, and the parts on opposite sides of the traversing 

 vein are not exactly opposite to one anothei", the intersected 

 " lode" is said to be " hemmed." Whether we approach the 

 traversing vein from the east or west, on the course of that 

 which it has "heaved," still in either case the dislocated por- 

 tion on the opposite side will be found by turning to the same 

 hand ; and thus a heave to the " right" or to the " left" is the 

 same on either side : — this is the meaning of the letter R in 

 the foregoing Table. The GA and SA refer to whether the 

 dislocated portion is to be found on the side of the "greater" 

 or "smaller angle." The prevailing dip of the "bunches" 

 of ore in Cookskitchen is to the westward; but I forbear en- 

 tering on that branch of the subject, or on a discussion of the 

 laws which may perhaps be ultimately found to regulate the 

 distribution of metalliferous minerals, as such inquiries would 

 be foreign to the object of this communication. 



Cookskitchefi Mine, Parish of Illogan, Cornwall : tra7isverse 



Section. 



[Scale 32 fathoms to an inch.] 



Allusions to the accompanying figure. The shaded portions 



denote granite ; the unshaded, slate, a South lode ; b Toy's 



Hcmvood del. 



lode; c Great lode; d Dunstan's lode; c Middle Engine lode; 



/ llardshaft 



