EGONOMIC GEOLOGY. 369 



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Seam. 



f 1 ft. 4 in. 

 1 1ft. 10 in. 

 3 ft. . 

 ( 5 ft. 9 in. 

 1 5 ft. 10 in. 



11 ft. 10 in. 

 (7 ft. 

 1 6 ft. 

 3 ft. . 

 3 ft. 5 in. . 

 5 ft. 8 in. . 



Locality. 



Xamnia No. 1 pit . 



Do. No. 8 pit . 



Do. No. 9 pit . 



Do. No. 12 pit . 



Do. No. 13 pit . 



Mong Ting, No. 5 pit 

 Do. No. 1 pit 

 Tin No 2 nit 



