The Washington union. [volume] (City of Washington [D.C.]) 1857-1859, 1858-11-20
TWO CENTS.
SCIENTIFIC.

the interesting TACT that Wllc emp helu Ol
inch from the nozzle of ycock would be forced away by
| the issuing steam held within eighth Of an inch OF
the nozzle 1t would be drawn suddenly to- aud forcibly
retained against the opening, as if by magnetism. The
property of supeheaed steam to absorb water also
markabe boiler with sclfacting discharge for ex-
cessiye steam, the machinery OF which heavily
weighted being neglected under brisk firing ono day,
! got overheated When the discharge acted, it was
through a nozzle turned downward into Itil of cold
water The steam suddenly shot into il did not,
would be supposed blow the water about the engine
room but it converted every drop of 1t into steam hlIng
the whole building with dense cloud OF yapor Not
sprinkle Of water dscoyeable upon The walls or the
floor albany Journal.
TASsING DEER SKINS. The method usually practised
in preparing deer skins for market is as follows The
skins placed in barrel of water with enough ashes
TO make weak lye They remain there until the hair
COMES off easily ith granlng knife, and they then
grained. They then hung up 10 dry until hard and
iinty and then they soaked in rain water with lit
tie soft soap the water being about blood warm To
dry them ringing is resortcd to- and after this process
the wrinkles pulled out by the hand They should
be next smoked with rotten wood or sawdut In long
trench for day So the skins being placed loosely in
box barrel and again washed in rain water. This
process is repeated two three times and very we'll
tanned skin is the result.
MAcHISE-MApE WATvIEs.-- is not more than twenty
years since clocks exclusively furnished to us by
European countries, and their manufacture here, with
very few exceptions almost unknown Now however,
they are daily manufactured here by thousands through
henstrumenality of machinery which enables them to be
constructed only In much superior and correct man
ner but at twentieth the price originally demanded
for them when manufactured by manual labor The most
ingenious machinery is in operation for this purpose
The manufacture Of watches is also now carried ON upon
the principle and by somewhat analogous machine
ry to that employed for the manufacture of clocks Dies
of the most exquisitey delicate formation employed
for cutting the various wheels well as other intricate
parts and lathes and polishing wheels for reducing the
plvotjcwels to the proper size, and giving them the
proper finish And while the simplicity observed in the
construction of the watch lessons It's liability to stop
otherwise get out Of Order any cause of dirrangsmen
| is more easily detected.
| To CLEAN GIovEs.--Iay them clean board and
first rub the surface gently with clean sponge and some
camphene or mixture of camphene and alcohol. Now
dip each glove into cup containing the camphene Lift it
out squeeze it in the hand and again rub it gently with
the sponge, to take out all the wrinkles Alter this
gather up the ca in the hand, and blow into 1T TO pui
out the fingers, when it may be hing up with thread
to dry This operation should not he conducted near to
fire. owing the iniiamrabe nature Of the camphene
vapor The receipts given in all the printed books we
have consulted for cleaning gloves are barlarous
ERrcssoN CAIonIc ESGIxE This great invention after
labor and study Of fifteen twenty years, Is at last
crowned with Since last spring. between thirty
and forty engines have been put in operation and are
giving perfect satisfaction They distributed in this
city Baltimore Providence, Newark and various other
places and Of them have gone to California
they are doing the work OF printing, pumping, and driv
ing numerous kinds of machinery. Two beautiful yachts
driven by the coric engine have been ersng during
the the Hudson river and on the Erie canal ~
I ~"
i Netc FORK Printer.
| A WONDERFUL MACHINE. The measuring machine in
vented by Mr. Whitworthi o England ior determining
minute differences Of length seems 10 DC ingenious almost
beyond human appreciation: Inc accuracy oi INC ma,
chine mas peeh demonstrated ny piieis III IL sc'u
yard measure, Iiie OF u oi steel, apout tlecluti
ers OF an inch square, having bnh the ends perectiy
true One end OF the htr was theh placed IN CONTACT
with the face OF the machine and ut the other end be-
tween u ana lhe other Lace Oh te ihaehipe, WINS ihiei
posed small fat piece OF stee', termed thc contact
] y. Yam. a,,I
piece whose SIDES were ao feaereu peiecuy 'ruc aa
parallel Each division on the lnicroincef represented
the II ooo oooth part OF an men, ana eacn time te
micrometer was moved only one diVsoh forward, the
expe 1menter raised the contact pee allowing 10 10 ae
sccnd across the end OF the bar by Its own gravity only
This was repeated uhtii the closer approximation OF inc
surfaces prevented the contact piece nom descending
when tc measure was co,nieea ana e NUMBER on INC
microneter represented the deau ehBth Oh tne satra
bar TO Vooooth plt OF IN icha iesuil ahioSt IN
cohce'apie'
NEW fRocss OF EXTRACTING gold. ihc'nou oi eA-
tracing gold from what is termed the 'taiilnss OF
quartz mills has been invented py Mr. chaVelier, a
Frenchman oil Sacramento lhese aillngs arc the sui
phates chiefly OF lron which, after puiycrzng are re-
jected IN the amagnnang process ana thrown out gen.
orally as worthless by thc miners MI Y. found thenl
to contain from hfty TO one hundred Genus OF god 70 te
ounce OF suphate and succeeded IN bringing ms 'nachlne
to such perfection as TO enable nm TO WORK over ton
OF inc luaiH waste per uay 'toh "oh = yieiuou a
aVeiasc OF one hunureu oons per un, ono ;
dollars peihg something's @ @ nom .l WIZ
cos.s oniy ~ shc su'n VI 'i''tl "o' ~ ~ " o ~ ~ ~ ~ ~ '
WHY IS TIE COMETS IAIL CROOKED !-Prof femce
theory OF the comets tail may be ooncisey stated 70 De
the discovery OF the law under whch inc l Is formed
Whllc planets olDits upout tue