pro Tiff, 4ND LEAD MINES. 284 
l^"'ge dimensions, branching out inta 
‘'ncations, and bending downward in a direction 
S®nerally, nearly east and we.st. These loads, 
■'*°™etiines white, very wide, and so tliick, 
'’f tire ore arefi-equenlly drawn up ofmore 
1 vs Ptrunds weight. 
J'tt M,''mtir - ^ 
'll "s by rerniinate; nut tne sagacious riiiner 
V''® sid!'^T iencc, that, by digging at a small distance 
' I ''Ppnr^’ meet with a separated part of the 
’rdlyit.g with tlie other end, as nicely as if 
I'he loads of fm-ore are not 
k ^Wy irtit sometimes break off so entirely, 
t bv terminate; but the sagacious miner 
k ^ ^ t*., CIJ 
broken off’ by some sudden shock of the- 
aticl^* Cornwall follow the load, or vein, in all 
’*'■/ ®‘'rth '^’‘■^■’b'iEring curves through the bowels of the 
tf ij'b by ’ i’® waters are sometimes drained from tbs 
rii(),,*"^^'-bnTaneous passages, formed from the body 
v' country. These passages are 
'"Vi.''*"-''' * occasionally the labour of many yetu's ; 
save the constant e.Kpense of 
'‘n- i lire-engines. From the surface of 
k, '■'till "’oi'kmcn sink a passage to the mine, which 
'C*“f ^>t'd place over it a targe winch, or, in 
'' v'' 'ity j **■'' *^^‘'obitude, awheel and axle, by which 
^'itj' j '"‘''y large quantities of ore at a time, in 
.'hlj- Steat -Tlil-'t ore is throwm into heaps, 
to *?^"^tiers of poor people are employed in 
■4 ,1 ' ^^“''bos, and litting the ore for the stamping 
*’'i| ■’''''• f(i- 
tnei'a!^ which tin appears is that of crystals ; 
ij under proper circums lances, readily 
q rence, in many parts of the mineral rocks, 
^ '■ ' Pu transparent and beautiful 
‘Otis ^‘ttside these crystals, in many ot 
parts of tl;e rocks, are found lho.se trans- 
CoRNtsH Di.^MONDs, they bfiiig ex- 
cr, 
, 'a 1 i-'arts c 
\ Mt^rl ^ Wh,»n 
erf 
well poli.'fiiKd. I'heir ibrin is liii’.t . 
•J ill P^^inted un ihe lop, and tht-y arc somt-rinif 
V' k,g,i, 
^"iijf reiiuirUable i.eai) mines, may be ciied 
-Louisiana, in iVoKTti A.me.hioa- w utcli 
^‘^'^t's been lii^hly produq'dve. 'J h.il caiicd 
