the Lead Mines of Missouri, &c. a9 
ticularly brilliant and white ;* the quartz is often prettily 
erystalized, and is so invariable a concomitant of the ore, 
that the miners, as we have before a give it the 
meaning appellation of mineral blosso 
A curious fact i is mentioned ee Mr. “Schooleraft, respect- 
my 
t seems aiioge; is a consi coe quuncry. of a greyish 
white sublimate Sages at the log hearth furnaces, and re- 
ject bande as rkmen-upon th supposition that it is sul- 
ph 7 5 ; Sohoatotethy| -unquestiona 
experiments, ascertained that i it was lead, (as would appe: 
in the form of a carbonated oxid. A considerable loss is 
in this manner sustained, and in a more advanced staieok 
the metallurgic operations of these mines, the author’s val- 
uable suggestions will not be neglected. There is one mine 
(M’Kain in’s,) where the ore is of the. steel grained variety 
—it is said to yield less lead, and is inferred to contain 
more silver than the common ores: we are aware that this. 
is th > common impression, but our own experiments on 
different varieties of lead ore, would induce us to think 
that it cannot be relied upon. We have examined fine steel 
grained ore which contained very little silver ; in one speci- 
men only one five thousandth part, and in another, and that 
a ne specimen, we found three and a half per cent. ah 
silve 
"The methods of digging for the ore are sufficiently si sim- 
ple. “A pick-axe and shovel are the only tools used for 
pits the earth, and the drill, hammer and peiiog om | 
when it is necessary to. blast.” oe is 
cartied on as in n digging a common well, 
aware th 
i Fiee ean 
in the cone i bas phosp 
