|  | Page 182:- afforded a clue to the assessors of the property tax which soon 
after came into operation; and this mine - which 200 years ago 
had been valued at fifteen shillings and fourpence - was 
accordingly rated at £2,700 a year. The consumption appears 
to be constantly increasing; but how far a permanency of supply 
can be calculated upon, is questionable. The most prolific part 
of the mountain may be already explored, and the principal body 
or trunk of the mine excavated, so that posterity must be 
contented with gleaning from the branches.
 
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