The Charlotte journal. [volume] (Charlotte, N.C.) 1835-1851, 1838-02-23
ruarIGffR:
friday, February 23, 1888.
AssaYING NO. 3.

In1t.s NV tAhtsbtll SNORT,
- "a The Ordinary dealings for small a.
mi, al GOLD, where there Is neither time nor
soooranily 80 obtain more correct assay.
ii. B, The Touch Stone.
I'D o, Specific Gravity
n rbess two methods the Isl is the most exten.
~, IA ils application, and with practice, might
pr-ry safely relied on under ordinary cifcum.
Inc. OF purchasing. &c. In the extensive com-
.,ee Of the precious meiais thrnug bout the East
DIES, his is sad 10 be the only method used 10
certain the value, aud the Chioese depend upon
n buying snd selling.
THIS melhud is also used exclusively 10 France
the officers Of the government 10 testing the
w, oi articles OF Jeselry aud gold ornaments,
here the samples are small, IN wrough,
sherv peiee cannot be spared for assay,
+, !. 40 convenient substitute. H. the min
.sricts 1T this Stale. IN G shefe the allows
Il gold offered tor sale ART snaa aud the pu-
laes not nearly approach ~ cafais, this oIo-
. aud be much mos 10 be- degended upon
'bsi a "SPeeIde Crafty" which Is The one
.hs ost Pa,i USED here, bat which last Is only
h,fe the alloys are OF a certain character aud
1d has neilher bees compressed or otherwise
,slsd iSr iraudulsni purposes.
II, By The Tocoa SroSr.
TIE Touch Stone Is bard DARK eoloured stone,
* o,ed principally OF silver and ,ton ,nd,ssrue.
d b, ACIDS, known b. The namo Of Lyclsn
b.. Upon The surface oil this sionc hal polish.
me urlalllae mass To b. uied should BE- reb
Il and ,ht'e will he ien a thin co.., ~ marx u
a. he eoloaf sOd Apo arsnee of which u Ihose /
kceu,lsntd To sec and handle gold a9d SILVER. all
~ to .heS in what proportion these metals are
b.hcd For greater accuracy, however, the I
90 aakug this u.al IL PROVIDED Nth a nun.
q sgial b4is OF ueedles, Of ~hleh one is pure
Another pure silver, and olhefs CONSIST Of
ESQ pc,al. ,sr ~lth copl~tl mixed together
rgnt psap1rlioas. varied b. earss, or oseE
go. "a. earais. u great ,Siciness b, required
llsness Ut zach asedr bc'Ug marked GA II,
nal ,.edlr who-e colour secuA - como nearest
u. -.aur Of the nseiallihc sutsk upon The touch
ae !, ncbbed on the siose b. The sidc Of lhsi
tn,.G r. needle lkrNise leaves mark. and
j t4e,e APPEAR ~ he no difference betwren the two
s4Uias susass--tA~ metaliGc mass - Jadscd 10
the = ne 6asness ss tie assdl, iA5s com.
ksrsH AKA IL
g. ASSIST bs eve slili further. 20 Judging the
Scliilae taee, o. sfeaks u,oa the stone i may
att. b means q iho tes'hcfy part OF eu,il
% aH'ie atid Of a proper s'fearis ga grntiy ,
~ u,ee 'he traces s,ttaks. IN ecyrn ~ /
'ee,hds The acid ia ipcd oG, and the Ell e {
,yrsd. II the streak Is uaatsrsd abd ia Il
tscy preserved. tlr meta lhnc mass msy BE- 1
'td Of eef,aln tiafne.s. u red snd cnppsfy q
orc, and n the .ff,ak has bern nearly e. .
NJ sy TIE aid u euaiains vefs lbtilo gold. II
y c'npafuoo especially 10 the o. CT produced I
its caT0poudiag slreas tho lggca nee. '
= Flf' oouecs oainna ma, u f3rmcd d lhe 5
d thc eAss 20 We tined .
Waca lLs rs, IT gold 10 - h.gh standard. e. (
a 70 o. above II cafa'.. y }. pfpfer 10 make :
~ scld composed OF " patts ~ nHtlg acld Z,
ti] 5easu,, aud parts Of u6silite se,d IL
: agn't, and % part. distilled sllc-. Tn.
ps'ilih q mufisiir acid i used 10 enable ,l,e 81
rs Asid act nore sdsc,oaily up0n tse .apr al
tl ne guild woatl a,lstsise protect aud lIis s,
''' 'or ased "a nut raeuEi without hcat, gp a., u
te gold Ia,
b Srgrpc GR.wrr Il
! ID. p'laeip.t upon saieh tbs method dercuds 90
p fa'' ss.I Of q earais .fasarss rasfeI, but
t7n,ti o. rolicd. T. o. a ,p,c 6c gtayit, ~
lt2jS t,old Of ~ csyais flrae.s 80, :
H''ra Or compressed. i. Of l7i,63--oi 20
hoeAess not ha'ameftd Or e8nwessod 81 II,
Sc W
y A''ng therefore the specific gravity Of the :
.'hs uass Va Ne tiled The result may b. com. -
"'h lhese known and ascettainsd results,
q proportion stated. 81 that II the specific !"
~ q The mc,ali,ae tassa ho between any !,
numbers the difference pusl b. ptopot
-! tfimattd a. between L. 7090. which ,s
~ cAfsJs aud Il 1853 when tsoqull -
= INSTANCE, q the specific gtayis ola mr..
avs Nefc found 10 be not rompteased II.
- panty sould b. about 81 22.32 els. fine. -,
0kg rnr TEciTic aRAyirY oY ANY GIVEN
IT, soirn, on sAss. hy
= 20 i'i', th' sohd Of is weighed FIRST "a pt
''' "a r1iu. The mas may he attached To-
~"uA Of accurate scales by fine thread OF m,
~ alter having beea weighed in air--and M,
- 'nio lhe Salcr Il loses OF It's weight qusn. IN,
r'''sely Equal 10 the weight OF it, avn, bulk
scr and hence BY comparing this weight an
'o'al weight - hod IT. Specific gravity.
| wv" 'hof. tore Is,-atriJs me total pugA ~ me
WEIGHT N rns WATER, rHE auauENr is
| ".Wc dssvrY Thu-. d mass OF BODY Ia
- "a tn az cod q. 80 water, and the te. lat
ta' u divided b, ipss ~hieh is oue, the DC
,'h' or specific gravity will be ;,
i ~ instance ~ the extraordinary accuracy o.
Il ''s ''s'sm }. susceptible usdtr certain CIR.
'-pces, We may lpentipn that We have M. VI
/. "a' not less than The amount ~ $4,000 arb
en pnteiasrd IN This vicinity by one In,t. d, i
i. ewing upon specific gtsv,g alone To e.,i.
value ~ small quantities and of every re-
j "" nHeaess as coming fnD dtfereat m,pes. The
nom 10 oatats 10 % Ia tintnt--, and tbtf r.,
aS''s' The resul, o. tbe aggregate average
ASSAYS upon the Who'll amount did no, MT
= I've nifty dollars from the results of The spc arc
: gravity ttlals. g.,
a,;' however, that the specific gravity
I .0"d being rom u ~, % u. SO whenever ~
J 80. Is used TO alloy gold, ID isl by sp. tor
f would DO erroneous Ia 1nporion 10 ice,
4 'aI,y Of the platina inirodues d into The
nav, 'ha' 'hefe should be no dependence upon "''
Il "ou "here large anonnts are cnr,erbed !
;. natural or artfc,al alloy i. a n.clsl o. lug
70 tpeClHr "A. 4