174 Observations on Lead Ores. 
is a well known fact that most galenas dobtain silver; of 
course, most of the metallic lead of commerce contains it. 
Among a considerable number of American ores of lead, 
which we have examined by chemical means, we have 
found only one, entirely without silver; this was the lead 
ore which is found near Shawnee Town; in the Illinois, 
along with inks spar 
We have extracted silver from the thin sheet lead, which 
comes as a lining for the tea chests from China. © 
| most instances, whether in the case of ores, or of me- 
tallic lead, the proportion of silver obtained by us has been 
too small to admit of profitable extraction, but we have now 
the pleasure of stating an instance of a contrary character. 
We have had occasion, more than once, to call the atten- 
tion of our readers to the mine of Mr. Ephraim Lane, sit- 
uated in the town* of Huntington, eighteen mates: west of 
ew-Haven. 
‘The es place diversity, especially of inetallic substances, 
é J 
indicates a mining region, although it is diffi- 
pe ry which of the numerous metals found there, will 
ultimately be the prevailing one, either im quantity or in 
value. 
It will be recollected, that the excavation is vey slight, 
having as yet, scarcely exceeded ten or twelve fee 
Galena has been constantly found, but in aasiciiee too 
small for profit, if the lead alone were regarded. ‘This ga- 
Poot is not the steel — kind; it is the foliated—in 
same mine, and indeed almost in contact with the lead, 
might well have raised an enquiry, whether this galena 
were not peculiarly argentiferous. On pier gieueeceos this 
proves to be the fact. | 
** Forthe sake of foreign re readers we will observe, hat the tibed town is 
often used in the northern and middle states, as a territorial term, meaning 
tain pearaeleal” arca, a six miles square.) often expressed also 
svord township, and a it usually ¢ yr ge aon ' 1 
sucha i fb id thew necessary 
nelens of houses an Jati ometimes 
seatterrd over the whole surface mre ion, “both being a 
