COAL MINES, 287 
If is the enumeration of tlie different sub- 
VI- 'saH metals are found. In granitic mountains, 
^ ’ iro - - . 
1 1 't’hich metals are found. 
''Osfc' ’*°’'> zinc, bismuth, cobalt 5 and in gneifs, or 
|.^c^ S^'anite, silver, copper, lead, tin, and zinc. In 
®'^i'i.st are found copper, tin, lead, and antimony. 
,/tiOf, slate, copper ore ; and under argillate, or 
silver, copper, lead, and zinc. In steatite 
•f, Pyrites, and magnet. In primitive lime-stone 
and zinc appear ; and even in strata of coal, 
galena, and manganese, have been discovered. 
= silv. 
CO.VL MINES. 
are 
V 1^^'Erv ^'^attered, with a more or less sparing hand' 
S,*''bfi'^,*^'^'’tinent, and almost over eveiT kingdom "* 
there 
f «nri country where coal mines are 
rvhas I ° ^‘■cquent as in Great Britain, the opulence or 
ill principally ascribed to this valuable mineral, 
'^’th, the very soul of her manufactures, and 
V,L? *15131,/ her commerce, eveiy manufacturing town 
ijj j cd in the midst of a coal country. Of this 
fMj^’-arices are afforded by Bristol, Birmingham, 
Sheffield, Newcastle, and Glasgow. 
Whitehaven and Wigan are e.steemed the 
•V f I and peacock coals of Lancashire 
’ that they are suspected by some to have 
' orjet, which the ancients ascribed 
Somersetshire, tlie Mendip coal- 
j|^^''tguishcd by their productiveness : they occur 
not ( in every other part, in the low country, 
■<l ^rnind in the hills. I'lie beds of coal are 
'■till *^nt sloping, dipping to the .south-east at the 
»<■' ' ' ' " 
Hence they 
tstt 
j.jj/t-'iii •'*r> I'erp that it would not be po.ssible to 
■ ''ci’c it not that they are intersected at inter- 
0[ dykes or veins, of a dilierent kind 
.me other side of which these beds are found 
i,N Of They are seven in number, lying 
‘ ^ beneath each other, and separated by 
'tiyjhore kind of substance, the deepest being 
'•'^o hundred feet beneath the surface or 
kw 
‘*of 
twcastle, in Northumberland, has been 
