Macon beacon. [volume] (Macon, Miss.) 1859-1995, 1873-11-01
USEFUL KNOWLEDGE

USEFUL KNOWLEDGE
RESTORATION OF On PApTEaG-It
appears that the brilliancy of the colors
IN oil paintings is due to the optical
properties Of the substance contained
IN the oil, known 81 linoline By x.
posure to the sir this substance, st first
liquid, sbsorbs oxygen, becomes sol d
and transparent, firmly inclosing the
particles Of color. Lnseed oil contains
50 per cant. Of this linolne. Bv lspse
Of time and physical s1d chemical
changes, the incline lcosss il some de-
gree its transparency and the picture
fades, those colors containing the least
oil changing most. Pettenkoier has DIS
covered thst the vspor Of slcohol vii
renew the qualities OF the l~inoline, SD
he restores old oil paintings by placing
them over $ tight box, in The bottom Of
which IS 5 flannel cloth, which hiss been
lampened with alcohol Of 50 per cent
strength. TIE Arrangement. should D.
such thsi every part Of the picture viii
be exposed TO the loohole yapo..
LARD As CyoCESr.- IS vel. known
hat rubbing the body With neg :st
has the eject Of reducing the .-mr=r
tire OF the SKIN in ; srle. fever 4 zen.
tlems1 o! our scglsn.szN hss used
the r., portion Of smoked hans With
beneficial results sEi Vr:es 70 the eii.
tor to disseminate the :sn: 70 others
be1e5. \ celebrated Gerusl pLysi.
cia1 r-Noue1 70 incorporate one or
two grsmnes Of csrbolio seid into one
hundred gramnes Of lari, and, with
this, to rub the whole body excepting
tie head, tSo or three times 8 da7, so-
cording TO the intensity OF inflammation
charscterizing the csse il hand. The
eject Of this kind Of treatment is to
propuce s pleasant feeling OF GOODNESS,
to keep the akin softer, snd after each
application the temperature Of the skin
falls somewhat. The carbolic scid ope.
rates to destroy the germs and spores
Of the disease.
Test POP COPPER AND TE N Ey-
TRACTS Tie poisnous nature Of copper,
and, 70 a less degree, OF tin, makes the
following method Of testing for them in
al extract, as described by Hager, both
interesting and useful, for either OF
these metals may have been dissolved
from the walls OF the vessel in which it
was prepared, The extract is, for
tor this purpose, dissolved in i've parts
Of water, or very dilute spirits, and
slightly acidifed With q drop or two Of
nydroohlonc acid. A bright strip OF
zinc is placed in the solution, and, after
half an hour, il 10 impurities are pre-
sent, the zinc will be found as bright
and colo less a. when first put in. If,
however, copper and tin are present,
II will be coated with brown film
/ tin alone Is present, the film
will have a grayish white color, Il is
Washed With water and dried by heating
he strip Of zinc gently in an alcohol
dame, and the copper will be indicated
by !ts vell.known copper color, Under
ike conditions the film OF tin ia a dull
grayish white. II copper and tin are
both present, and it is desired TO deter
mine the quantity Of the tin, the film is
peeled Of Sith knife into a test glass
and I've 70 eight drops OF nitric acid
added. It IS carefully DO led until entire
y dissolved, when seventy.fye drops OF
ammonia is added, the solution shaken
aud allowed to settle. Ii tin is pr sent,
It will separate as amorphous oxide OF
tint in white flakes"
SASDAyD MUD BATHS. - Baths Of sand
or mud have had a reputation, more or
less deserved, for centuries; and at the
nreseutd day are employed tJ a cousidrra.
Die extent in different parts Of the world.
By the former, the inhabitants Of the
eastern shores OF the Mediterranean
expect 10 cure their rheumatic and
.crofulous troubles. The pr cess Ct
taking this "cure is very simple the
the patient buries himself almost com.
pletely in the hot dry sand, and remain.
thus, some time after a profuse perspi.
ration has broken out the per,p ration
Is oon followed by a rash upon tbs
skin, which subsidies in a few DAYS.
The little benefit arising from this cure
is due in the main to the sweating
which frees the blood from impuritie!
through the pores Of theskin, which lat
ter il locally irritated and excited t.
greater action by direct contact Of tn,
sand. But the latter, the mud baths ~
popular on the continent of Europe
among which those of Salzburg, Fran
zenbad and Marienbad in Germany hav,
The highest reputation, are really NOR
beneficial. They are prepared in tn
. following manner Bog mud is thor
oughly dried and Bifted, then ~saturate,
with mineral water, the mixture bein
made 70 soft that the body can sin
4 into it; the temperature IL raised
I about ll2 degrees Fair, and the bat
is ready, The baths may be eitht
partial or complete, according to tn
port Of the body TO be treated but
either case, the duration of a sing
bath ia from thirty to fifty minutes
. after which the body is cleansed by
warm water douche. They are take
daily, early in the morning, until reIi'
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