The workingman's advocate. [volume] (Chicago [Ill.]) 1864-1877, 1869-07-17
SCIENTIFIC NEWS.

4 bsr Of ron slightly curve by its own
weight can be Strengthened by being lag
netzel
RESOURCES oF Missouri We learn from
a gentleman recently from Washington, who
bas visited the new meteorological cabinet,
deposited We think in the patent office, that
among all the States and Territories repre-
scented, cur own State OF Missouri, both 10
number, richness and variety Of specimens
Of mineral wgaigh, il far 10 advance Of any
% the others Indeed, the contrast is 50
marked, that Missouri by the space occupied
IN the cabinets, appears to be three or four
times as large any Of her rivals, even the
rcaest Compared also with California,
Colorado, Montana, New Me- ico and the
other mining eglons, the magnificent spsci-
mems Of iron, coal copper, zlne, cobalt,
gold, silver, and scores "a other mineral pro-
auctions, give as an advantage at once sp-
precateo bY tire eye, ana sure evidence Of
wealth almost ungqHailed id the same ex-
tent Of country eisewhere.-hanslS City
Journal III Commerce.
BEssEHsR's LArEsv PATENT.-Henry Bees
seiner, whose name has been long identified
with improvements in the manufacture Of
iron, has recently taken cut patent IN eng
land Oh new process, the object oi winch
IS 10 secure a more Fap3d and less expensive
mode ~ fusing inslleahle iron and steel Of
different kinds, and 70 obtain csst-steel and
homogeneous mailea5ie iron tAereirom. Ia
order 70 accomplish this, tie inventor aVaiis
himself Of the property Of gase'sous fluids
To rise N temperature 10 proportion as th-v
are compressed, and be constructs furnaces
Of sntlciec; strength ID Withstand an inter
nal pressure equal 10 tsO or more Atmos-
pheTes, and retains in such furnaces the
products Of combustion under such an ex-
cess 81 pressure over that Of the external
sir ~ vii produce .r7 high temperature
nee assary for rapidly iusiug malleabe ron
ana steel Of any kind or quality.
AERoSrEAM ESGI.Es.-Some interesting
trials of NarsOp's strand steam engine
bays been Tor some time in progress at Not
tngham, England, and the report upon the
results Has 1een made By a weli-known
London engineer. the engine, being start
ed by steam IN the ordinary manner, sin
gle-ae,ing air-pOmp, worked from the crank
shaft congresses air TO a little more than
The boiler pressure, the air thus passing
through a long circuit Of straight ara coIleu
pipe, which tTaverses the exnaust-ppe,
makes several Supra. coils 10 the chimney,
then descehds az one side "a the fre-box,
exposed to the full IRE, and IDEALLY c meets
with a valve box, through which the air,
more OF less heated, enters the boiler at the
bottom Of the water space. So far as the
xperIments-cart fully made upon an i'm
ueriec. engine, worked alternately with
steam alone and with steam aud alr-can be
aiken as establishing a principle, ;hey indi-
cate a considerable economy an economy,
however, hey ond any thing which, as yet, is
ulera0le from theory. Further experiments
upon new and greatly improved engine On
Narsop's system are arranged to take place
shortly
MANUFACTURES IN BfRMrNGHIH weeks
WORK 10 Birmingham. England, IL its aggre-
gaze -ssulis, IL something wonderful L.
comprises the fabrication Of fourteen million
pens, SIX thousand bedstesds, seven thous-
and guns, three hundred million cut mails,
one hunured million buttons, one thousand
saddles, five million copper or bronze coins,
treHty Thousand par Of specia aches, sir tuns
Of papier-Bldcts ware, SIS 600 worth Of lew
eli y, tour thousand miles Of iron ami steel
wire, ten tuns Of pins, tive tuns Of halr-pins,
hooks and eyes, aud eyelets, one hundred
and thirty thousand gross Of wood screws,
five hundred tuns Of nuts, screw bolts spikes
and riyets, fifty tuns OF wrought IRON hinges,
three hundred miles length Of wax for yeslas
forty tuns Of rehned metal, iorty tuns Of Ger
man silver, one Thousand dozen OF tenders,
three thousand five hundred bellows, one
thousand roasting jacks, one hundred anu
bty sewing machines, eight hundred tuns
Of brass and copper wares, besides an almost
endless multitude Of miscellaneous articles
r. uukr rh IN hat
which, ike those enumerated, 6ud employ
ment for hundreds and thousands Of busy
hands. and are destined 10 supply The maui
fold wants Of humanity from Cuina to Peru.
STEAM AND EXHAUST PoETs. For the sake
Of simplicity, Il is an almost universal prac-
tiee to make the steam enter aud leave
given cad Of the cylinder Through the same
yort. MIR Jocle has poiated out that this
praetice tends to the waste OF heat, cspec-
iaIly with high rates Of expansion ;--be-
cause the cool expanded steam, in escaping,
cools the mental Of tie port, which is again
heated at the expense OF the Iext cylinder
fol Of hot steam that enters; and ali tbe
heas 40 transmitted from the entering to q
Gaming steam is wasted. Mr.. JoGIe there
I fore recommends the use Of separate admls-
sion and exhaust ports. To permit the ready
escape Of steam during the back-stroke, the
exhaust pipe should b double the area Of
the team pipe.
IT has been observed that wires which
I have for long time transmitted electricity,
7 bave their texture changed and are rendered
I brittle. Ia this observation, however,
/ h0ugh mad BY skillful electrician, NJ.
I Peltier, the effects Of exposure to he atmes-
pierre, 90 changes Of temperature, &C., = ave
not been sufficiently eliminated 70 render il
worthy Of eatire confidence.