The Express.
London, England, 1850-09-04 00:00:00

oar accounts teen Vaigesiain At that the
donnee of silver at Copiap are ltesolning every day
more numerous and impalas% oaring a great de-
mand kir workmen. Tow town was improving very
musk and ere keg will become a formidable rival to
Yelparano.
• Portlier discoveries of gold continue to be as-
noaned be rodeos part of America, and though
is many instances those danaliag seesuats mast be
received with eireagespeotion, still the actual ca-
nteen of the precious metal in many porters
where such a discovery was never impeded, I. placed
beyond a doubt. The Cambria steamer, just arrived,
briup what appear to be authentic details of
the discovery of gold ia the supper region
at the sortieweet. The editor of the Lake
Swarm Journal announces that he has been '
shown a pees of quarts net from the neighbourhood
of the Lahe, which. Mtn being thoroughly tasted in
emend ways, was proved to contain several deniers'
, Worth of pure motive gold. The metal shows itself
is particles dimming:4d through the quarts, the
which, judging from the appearance,
trbi al of
more than a dollar. Parties • the mining
enatry are stated to ban discovered several
roam of this dentriptioa, of which the
bagmen is poetises was a sada: speci-
men. This is not however, the first discovery
that has been made of gold on Lake Superior, as
geologists have detected it in several lastainis t and
the late Dr. Uoughtm expressed a confident belief
that gold would be toned in considerable quantities.
The journal above :stoned to, after disclaiming all
disposition to start a " golden humbug story vat the
north-west, attrzremieg a carrion= that the cop-
per and iron to be in existence and in opera-
tion will be of more permanent and lasting wealth to
the section and to the whole country than even a rich
gold mine on Lake Superior—proesede to mention a
hope that this gold-bearing rock will be thoroughly
tested and analysed, sad the country explored more
fully, with a new to (unbar discoveries d the pre-
cious, metal.
Various estimates of the probable Mare yield of
gold from California have from time to time been
published in the American Jospeh, but few of them
appear to be band ups data sellaiently respectable
to commead musk attention. A statement with re-
gard to the probable product of the mines during the
present year hes lately bees gives by the Not Or-
isons Delta, gad appears to meet with more sup-
porters on the other aids of the Atlantic than might be
riposted, of %RAWL( the magnitude of the results ar-
rived at. Midas di dime allowance for over empties
=rdienedlig all quarts stories and pro-
statesemlii, sad relying strictly on well-
asmeheined kale, . the above authority mi-
nds, the mesa Mis year at half a million
etdellsre per day, or Mien aniline per month of
thing days. TIM is allowing to each miner an
avenge el five dollars pm day, it being calculated that
there are at present fully one hundred thousand able-
bodied we engaged in mining. Of there, however,
it must am be Swanton that many are foreigners, so
that the whole of the gold will set fled its way to the
['sited States. Assuming the fasts to be as rated by
the Delta, the product of gold for the season beginning
the let of July last, aid sadist, the Ist of next De-
cember, a period of Ave moths, will be
&boot seventy-Ave million of dollars, or up-
wards of fifteen millions and three quarters,
sterling—a calculation to which oar readers will pro-..
bably hesitate before they give in their adhesion.
Oa the other hand, a week 6s jest ben published
at New York, whore it is nada:, some anemias,
retitled " Three Years is California,* he which the
author (the Rev. Walter Cohn, "of the U. 8. N.,
late Aleolde ef Monterey") expresses a belief, tom
mental obeenatica, that the serfage gold in Cali-,
forum will, in a tow years, be exhausted, sad that the
occasional discovery 'of new depoSits cannot long
pootpoes each a remelt, pee ass it be delayed for any
peat number yens. ens by the ado don
d wire manatide ankillelent methods of oscoraff
the treasure. 011111.11% the writer thinks, win
prove so exceptha id diltierespecx to etberputs of
the world, when Arlin Spbeen fmd. Pat
men were this se, Go: t gasses& still re-
CalUseelle be with horst:ea=
and valleys I' Ina si pima a bar gedirbonring
reeks.eeese einsdletlrwatie her alluvia detente r
The gold rocks &Mg " "
avenge, no more than a goat to the rebid; 'and
saSteee results are suaniestly rensmerative tojestify
California pm% bend el the
ivii s
the bet tsar. of she Sem Nevada,
yields from one to throe &liars to **peed. Mimed-
lag to the Report of Mr. T. B. slag, gad the Call-