Belmont chronicle. [volume] (St. Clairsville, Ohio) 1855-1973, 1869-03-04
The best safety-yalve. to a boiler is a

& nave WEOuSub Inc klOfy OF al lhOoS. f
4
| The best ssfety-yalve to boiler is a
sober engineer. -f.-,
By chemical process, knife handles
and fine tsoth combs are made from po.
tato pulp z9-a-a II .r~ H
An italian chemist Is said to have in
vented process whereby wood, cloth,
and other infiammable materials are
rendered absolutely fire proof, and
which is free form the objections which
attend the use of either processes. The
details are notgiven. r
| The coal miners employed on the line
of the Panhandle & Alleghany9 Rail-
road are on strike fer higher wages.-
! they demand five cents per bushel for
digging, which Is an advance of one
| cent. The miners on the Pennsylvania
Railroad, though at present ct work, are
daily expected to strike. ..-.. -.
KILLING GREAsE.-Old paint work is
always more or less greasy and smoky.
Wash over the smoky or greasy parts
with nitre, or with very thin lime white
wash. Soda will dc, but lime is the best
and cheapest. -..... --,.
Any work that fails to dry, may, be
made to do SO, by rubbing it all over
with japan and turpentine-rubbing it
well in with 8 brush. -.'-.s.. ~.
PREPARATION OF GLYcEn1NE.-Four
parts by weight, of yolk of egg, to be
rubbed in mertar with five parts of
glycerine. This compound has the con-
sistency Of honey, is unctuous, like fatty
substances, but is easily removed by
water. Applied to the skin, it forms a
vaTnish, which effectually prevents the
action of air. It allays the itching in
cutaneous affections. 1t is unalterable,
and can be exposed to the air for an in
definite period. .-..-
KILLING KNoTS.-Glue size and red
lead. Gum shellae dissolved in alcohol.
and mixed with red lead. Gutta pereha
dissolved in ether. But through all or
any of these all the pitch of the knot
exude if exposed to the sun. Perhaps
the very best method is, to size the knot
with oil size, and then lay q leaf Of gold
or silver on it.. In very choice piece of
work, hot iron may be held over the
knot till good portion Of the pitch has
come out and been scraped of, when
the two coats of the leaf will be sure to
keep out both the pitch and any iiscol-
Grafton. .Ts --=, fl a-tHSl 'i.'ra 81
I .
Cast Iron and Steel; in large masses.
can be broken, by an ingenious method
practised in France. 1t consists in bor-
ing cylindrical hole of two or three
inches in diameter in the place where
the fracture is desired, filing it with
water, inserting steel plug fitting the
hole accurately, and then allowing the
hammer of q pile driver to fall upon il
from height of ten or fifteen feet. A
single blow generally ''suffices to break
apart mass of metal from two to,three
/ feet thick. II f5sa4sra ust5 a n
Mica is now used in Germany in pre-
paration of beautiful, lustrous bronze
paint. The raw mica is prepared for the
purpose, partly by cleaning it mechanic
ally partly by boiling and by hydro
ehloric acid. The acid is then washed
b off, and the mica is heated to a red heat
until 1t assumes a beautiful silvery ap-
pearance. It is next ground up,wet and
rolled, and then assorted, by a seiye into
different dsgrees-of fneness.T The mica
scoloring matter thus obtained can be
mixed in various ways for practical ap-
plications. - -.-.9 10y.
A Coal Cutting Machine of 8 new form,
worked entirely by hydraulic pressure,
has been presented for examination to
the London institution of Civil Engi-
neers, by Mr.. Chubb, who claims it to be
great improvement in respect both to
eS1noy 81 "nu sioienVT, oVer any metn-
W o ~" sPlTyeu. ine arrahgemeht
consises oi WE'VE piungers,s see size oy
81 sue ou steeI oaf, connected with
autI puxmP auu 80 arfaneso9 as 70
us oS oapao.o ess q 80 sAseluihg a into the eoai
S aeots hat LII. 1890 iSus anu nan. "A pressure
VI oa aIous Ia owslse GTas 1,ls o ene square mcn
tried in Wales, and it is stated that with |
1t two men can readily break down |
twenty tons OF coal in an hour, the
whole In large pieces, with no waste.
f, MI. t.l--
CI ne aoue ri 1l 'ne ne" otate nouse; at
neio, IL, ".eu CoIn Piete, VIII De
SniP an PoS1'nS ai.alI, Jummeins ilo.n tue loi-
Ntn tS ,ps.on -. ue eA.flior aIau 11e
&C. =, Sus uoue &c, .. iss ~" oase tIo
Iee', .1nu IoIis t.e styiooaee oi tne up,
Pc. @ s.iuo.uie :sl Aoove tnIs Is Peuestai
oouiSe VIII olnaineH.al outerssses anu
pa1sis: pc LIS aoose Inis s.ah1 we've pairs
=, ;noS ~ y, Nv l,;a,otn i iees iou
iiees an I,ar hsh .;s.l anu tnlse lee'
s,a nan1si ,.Snos oei;.n." ILL., VIII osinJe s AnE ses
o1eas;aai ena, Soinstr"S vses ;sL sa en p
aSsioa! oarus stLaNe WIN ulns. Det"esn
eacH Paii VI coi1inns ., Is = laree circular
UoP min91m' anu snaieI one aoove
eilicneu enS ;I py neasy mouiaeo % archiv0,ts %
s,;N auu inpsss siI cAfveu sclois. Inc
'uFnn ueaIuetel oi tne oolIe, lncreaseo OUTSIDE
., tle coiennns es ~ shis sectioH,, is one
iiuLiulsu .: iee.. Iaca pair ol Golumns
PrcJecune ifoni the cffeuiar wall Oh the
uome III tneMseiVes. 10TH puGtresses
tne colunns slano Ilee, the entaoiature
connecelng t1' tnem WIN plsstsrs against
! the circoi&r "aii 0enino tneH. |
The Hon. William I McAInine deliv.
Grad the closing Iact,,re IF tha course he.
fore the Amar;can eJnstitnt. at Mao
York on "Medern Enoineer;no y A fer