The Fairfield herald. [volume] (Winnsboro, S.C.) 1849-1876, 1867-11-13
Scientific and Useful.

sandy constituents, the granulrs bcoon,.
lnS apparent to tie sight. It.
Is made by melting any OF the white
soaps, and, while IN paste, thoroughly
Incorporating Herewith seven or eight
Fer cent. of finely slIlcd white sand.
AS soon as it is quite cold, it is taken
from tn" frame and cnt into tablets, or
moulded into balls Porcelain clay.
su'phate Of baryta. pounded pnmic.
s'"n", etc, may be substituted for the
sand.
CHINESE CHMENr. /. Take finest
pale orange shcl!nc, broken small, | H. ;
r'cl'ird alcohol at ninety degrees, Two
lbs. maceratc together in u corked bot.
nntil dissolved. 1t is very strong, almost
"ri"rlrSS, AMI has the consistency of
molaSscs 2. This is prepared h"'sanc
way as above, but wood ,aplha is used
instead Of alcohol, and is inferior to lhr
following ). Take of borax ,wo
ounces; water one and a half pin,s
sh"!lHc six "z. boil ina covered vessel
Until dissolved. and cvap,ra;c to a prop
or consistency. 1t is employed to mend
glass, china fancy work iewclrv, etc,
E'r which purpose it is only inferior to
Armenian cement.
PRErARATloN or DLAcKiNG -
Take Of animal Black ten and half
ounces; becswax five ounces; gum one
ounce; lard five ounces Introduce the
whole into Il vessel. heat for ten minutes
and add one ounce OF oil of lemon. 2.
Take OF ivory black twenty-five ounces :;
olive oil sixteen ounces; pruSsian blur
ono ounce l,vdrychluric acid eight or. ;
Indian lac one ounce molaSses thirty.
two ounces !; gum four ounces; water, a
sufficient quantity. Mix the black with
the olive oil, add the prnssian blue, lac
mnrialic acid and molasscs; stir we'll,
and then add the gum and water.
PREPARATION or ENGl.lsI BLUE
ASHES. "A solution Of sui lpha,n Of COP
per is dccomposcd bya solution of
acetate Of lime, with little excess Of
$ulphato Of copper in the liquor. The
copper solution resulting from this doub,
lc decomposition ought to contain very
little su!phate Of lime il solution; leave
t" settle twcnty-hur hours and filter
Dilute the filtered solution with water
until 1t marks i8 deg B. Prepare also
Il kind Of milk OF lime as follows choose
good white qnck lime, slack it rapidly,
and dilute it III pure water. Keep this
paste IN a state of agitation for some
time in II barrel lined with lead, and
provided with cock few inches from
the bottom. AGcr minutes rect,
draw of the milk and leave to settle in
tubs. When the dcnoait is well formed
1t is ground Tor some time and thrown
on a fire sieve made Of copper wire.
The part passing ,!trough Tie sieve Is
the only one used. The mixture OF the
lime and solution of copper has 70 be
effected, and, as this mixture is made in
determined proportions, it must be tried
by dcs'ica;ion how much copper is con,
tanned III the solution, and how much
lime in the paste. The operation is now
in small quantities one quar-, of each for
example When the dry rcSiduum is
thrown down, we can decide on The vol
umn Of each TO mix. The mixture
,uuh, IN L.. onc,or ,Clr,. I;, .,
n,H ,nl ,hr., n,,r,.r NV, 49, l,
Of c,n,.r conolv d,y Tno .hon. .n",. M
nor,,,nn, o,v. ,Lo A., n,,.,na, rIy
.rrcr;n;,u,r hring wr,I sn,InI lo.,n,
IN. cjr,r Eon,r and w,.l, !, r.L,ll,
viii clror wn,rr ,hn, ,,,r.u. on = ,l'. !,
6y.d un . G,am. WIN !, h,. ,,.a,.r
cd = crr,ain so,i],.v il !. Ln,r1 ,vhnn !,
ACQUIRES a Green color Ter ~. s,,h.
oncn, onrr,,io,,, il : uec..s,r, r. H..
lcrminc the onan,ilv nI wnrrr .on,,;n, Il
IN The green nns,c D,v - C.Y ,I,,.hn,
slowly and car, fully, and III. dnnnn,,n,,
ia weigh, Indicates ii, los. IN wn,"r sns.
tanned, i, being onucr,l,v .Lrc. n,r, ,,f
the whole weight. On lbis hynn,bos;. M
pn. say fllv pounds in = tub Ind wi,l,
lead, along with lwe)v, and = h,lf o,l
Ions orpurc water: mix and adj iivc
lbs lime paste and stir ;mmrd;a,cl,
Ada one and half ouarlsof .oln,;,,
Of fine pcarlash, marking i d.y B
stir stronc and on;ctlv ,,I ;n,nri;,,
grind the mixture. The rrinljnn j. u
long on, rIllDll tI,. ,,ro y n