176 Observations on Lead Ores. 
It was discovered during the late autumn, in digging a 
well, and appeared to form a vein, or possibly a bed, at the 
depth of eighteen or twenty feet. 
he country is primitive, but the specimens brought to 
us, appear to have been deposited in loose ochreous earth, 
by which they are enveloped. neh fees 
The structure of this ore is a mixture of small foliated, 
granular, or steel grained, and fibrous; in some places it is 
so distinctly fibrous, as to indicate strongly a combination 
‘ing reduced this ore to the metallic state, we exam- 
ed it by cupellation, and obtained a distinct globule of 
silver, but it bore only the proportion of one-five thousandth 
part to the lead—viz. less than six ounces to the ton. 
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towards paying the expense, we will subjoin a memorandum 
of facts respecting lead and its ores, which, in a very con- 
densed form, we had occasion, some time since, to abstract 
from works of good authority, principally from the Chem- 
ical Essays of Dr. Watson, late Lord Bishop of Landaff, 
and from Aikin’s Dictionary. 
eo Notes on Lead. of 
The expense is hot paid, in Great Britain, by Jess than 
twelve ounces of silver to the ton, or six-tenths of an ounce 
to one hundred pounds of ore; some say nine ounces of 
silver to the ton of ore, will pay the expense, including loss 
e : ’ aaa 
The ore of Bruneuii1 Moor, Yorkshire, contained two 
hundred and thirty ounces of silver to the ton, or more than 
eleven ounces to one hundred pounds. == 
~ Duruam and Westmoreland, sé 
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tae 3 a MUI CS ty a be 
* The Bethlem ore is said by the discoverers, Messrs. Gideon Allen and 
Abner- rong, to be in abundance, but as their attention has been di- 
rected to it principally on account of the silver it might contain, they have 
splored thoroughly forthe lead, bears fy 
fot, as yet, ¢ 
to eae eee 
