Anti-slavery bugle. [volume] (New-Lisbon, Ohio) 1845-1861, 1855-01-06

The Incorporation is to so,idify it by snhjecting to
to a pressure of two hundred tons hOm n hydrosta
tic press, when it comes out in the form OF oheesesl
about n foot in diameter, with a thickness OF three
inches. Then put it on a furnace heated red not,
so as to expel the last drop of water from 1t, and
again melt it in a crucible, from which 1t must also
again be nodded into bars OF fine gold, varying,
to their size and fneness, from So'UvV
to $500 in value. These are once more assayed
at the hands Of the assayer, by the process before
explained, stamped to indicate their number, hne
ness, and weight, and committed to the vault OF
the treasurer, there to await his disposal. 1t is
only such bars that are ,cceived at the banks, who
are unwilling to nccept those which have been as
sayed without the authority OF the government
Their conversion into money must be done at the
Mint in Philadelphia.
Our Merchants, also, for several reasons, prefer
the gold bars to coin in making their foreign pay
ments. In the first place, they are cheaper, as
they are compelled to pay fifty cents on a hundred
dollars for money, while they charge for bullion
of the same value, in bars, is but six cents. They
are, moreover, obviously more acceptable to mer-
chants abroad than our national coin, except IN
those countries where coin iswanted to supply emf
grants bound for our shores.
The fineness of the bars manufactured at the
Assay Office, as shown by its operations on the last
deposit of California gold, was 995 thousandths, a
success not hitherto oqualled BY any other similar
establishment. When first deposited with the
aSSayer, III ranges on an average, from oOO 10 CCu
thousandths of pure metal. According to the re-
quirements Of Congress, our national coin mus
contain ten per cent. of Alloy. e., one hundred
parts out of every thousand. Fine bars, by tho
same rule, are required to consist of $50 thou
sandths Of pure gold, with a permission to refine
us much further as may be found possible.
But to complete our account, we should give
n report Of the fate of the silver, dawn off in solu
tion with nitric acid from the porcelain pots which
we have mentioned. All we have to say is, that II
is emptied into an enormous vat, nearly filled Will
a solution of common salt. The silver is thus pre-
c%ipitated, that is, sunk in q solid form to the bot
tom, becoming what is called chloride of silver
1t is then freed from the acids adhering to 1t, II
the same manner as we have mentioned in The
case of gold reduced to metallic powder by al
immersion in watts containing sulphuric acid and
zinc, washed, pressed, dried, and cheesed in pre-
cisely the same way as gold, and is thus ready t.
be re-mclted and re-employed for the purihcatioi
of the more precious metal.
Such is a brief account of the processes uscc
by the new Assay Office in performing the duties
assigned by the government to it. Every one
knows how important and necessary it is to the
interests of business in an immense
city like New York. 1t has been too recently es
tablished to enable us to present any statistic
showing any thing more than a probable estimat
of the extent of its operation for a year. a singl
arrival from California, on an average, Nrings 1t
deposit of nearly a n million and a quarter in valu
and such arrivals occur weekly. This would Civ
n monthly accumulation of five millions. Tn
machinery of the Office is enough for tho annuG
assay of fifty millions. Fifty m n are now carry
ing on its operations.