New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1867-10-25
SCIENCE.
DR.. Stewart of

THE ANgRoID BAROMETER.---Dr stewart OF
~ Kew observatory has made s'lcS oI eNlcIl,lS
~. ID .,tef e. G'eI rocter AZ noatain 70 900
ftot high Il would Indicate me rue lsht Nlith yyt
hhS.S ot HIS' ~, ty ,et flfh by Mr. steNert which
should prevent lts ne for strictly scientific purposes
ALABAsrEE.-ImmenSo beds of pure white
,lbasir have lately been discovered by NJ Frederick
EV en- the vicuiiycf the great rocksat deposit on tho
i4nd Of ST. Domingo TINS variety OF gypsNn Is r. ny
Ar,ely us,d as coating for walls ana cellllgs specl
mems " The 81 DominSe alxDaSter nave egn ~ ~ s
Dy several builders Of NeW-HoTk and pronounced oI 81
peyior quality.
Coal IN Observation-Disclosures beds OF
kse6iands bordering the River sinu about 100 miles
1oHth ~ the CITY Of Carhegcna. The coal "a found ID
a. distinct veins each from three 10 five feet IN thick
ness II is hrminous, ard similar ~ quality 20 the ~
Prof X p stevens Of the American Institute, who viii
report upon ther economical Vdile LOT gchel"'e
NnGyrTIsM.-In discussion on this subject
before tie British Association. sir william Thomson 1A
exception Ia lie remark HAT nag t,sln nae % ap;e
tklr utes its ulOn lie sIlaGt =, ~ rcnnte but it
OILY added proof Of the fact that ~ many pona In
hon q i'm direct oppositicn to facts published many
FpRrs ago Harlow in experimenting Win ptIs vi iVh
fouDd oug ago that the magnetic influence was not dis
s0veTtie iiiS expcrlpents were not carefully made
yet ne rashly stepped TO rhe conclusion that ndsesl
seSTrct bv Celebrated mathematician, this statement
Sas been Tie fruitful parent Of many fallaees
BULLET PEOBF-Mr. SylvGnde Wilde has in
yened AN instrument for extracting bullets in wounds
which has been apy called sensitive artificial NIGER
Cor It's action depends on the actual presence OF ,g
wires which connected with an electrohlBneI ara
bell 50 arranged that me electro circuit Sl b
COnta with The same piece o. meta when VIII loih
FSstiea 'i in eiSinStube wien introduced into the
w0nnd and are uncovered until the supposed buIt
b felt The forceps have curved points aud are not pal
covered on touching the bullet The latter completes an
electric citcut which sets in notion magnet ana by is
attraction compels the fOrcepS to grasp the bullet; II IS
then ready 10 be drawn Oat.
Process FOR PRoDUCISG HYDROGEN.-M.
EeuItebse describes Ia late number OI lLttetoh An
uical method Of obtaining ny diOgen gas lie places
charcoal in Ietort and raises 1t to req neat thI
which absorbs two atoms If oxygen, thus forming ear
bonnie oxide. Into another red hot retort ne passes cur
rent Of steam ard the gaseous contents OF tue hst reto
aud tho products TIE second retOt resulting rom tEe
decomposition OF steam are oar0one acid and hydrogen
Cascs which arc separated, ard the caThopc acid Is
again used In the fret reiOi The interesting process,
d. serbcd rs in the French journal Eas been long
used In America, particularly by those eSperlmenteIs
who have aimed 90 mixing more hy drogen Win jhe e
slRss " hydrocarbons W ch are very eh IN earo0' 4hS
therefore liable imperfect combustion, TO give on
Rae particles OF uECOnsuued carbon In Tie form oi SMOKE
UCHATIUs STEEL.-Ihe process of N. Ucha-
aus Az officer In the Austrian service, for making steel
by mixing graduated and iron ore in proper proper
hous crucibe was patented here many years ago ny
an american, and believe before any similar Plan had
been tried ia Europe The process was never careo
tto practical operation for commercial purposes IN TINS
country ; however. large company was formed IN
t4Ge, more man zen y S s e5 to produce steel Of
shs Ueaas,uS p"Ts' c o Of H. faIuIe l. now known
% ~ the employment Of improper ores In sweden TINS
kind II steel has been made with great success by mixing
TIE very pure ard rich magnetic ores OF the Bsbcl6
zines with ranuated ps iron made from the stme ore
aud adding lttl0 manLdnese or manganese ore inns
stee is lemal kbe lCr its teAacity and uniformity Of
grain II is used exclusively by tie Royal Mint OF oOcK-
i'm for dies Of coming presses, polished rolls ana ouer
similar articles requiring great strength eoSeness ana
Regularity Of grain
THE CoLOEs OF SOAR BUBBLEs.-At the late
meeting OF The British Association for the Advancement
OF Science 81 David Brewster read paper on tins sub
feet which appears that he had been led TO make
some new investigations the cause OF coors on soap
bubbles after he had repeated the beautiful experiments
OF Prof Plateau On the Equilibrium Of Liquid Mass
without Gravity II these the cOOrs OF soap bu
kes we're presented him upon soap films plane convex
and cOncaYe but the changes OF form which they under
went and their motions upon the film itself were ineOn-
pRtibe with the theory OF their formation After
Resembling various phenomena emitted by the ordinary
Sosp bubble and asO with the bubble having It's MIN
lOugcped by mixture OF cyCerine, sir David remarked
that his experiments sufficient TO establish me
almost incredible truth that the cOlOrs OF The soap bubDo
sre produced by the thickness fthe hn ITSELF but,
BY the secretion from il OF substance hONng over
Ne film and cxpaDdng, under the influence OF gravity
molecular forces, into colOred groups or various
apes and returning spontaneously when not returned
lorerby, into the parent films. -
the conclusion Of tie paper Sir William thomson
femari ed that the mechanical questions involved IN the
eeunsly simple operation OF blowing sOapbubbles
we're tile greatest eumas 10 scientific men, The extra
brcrary expansion and adhesion combined in the YapOT
spheres were wei worthy Of the fullest investigation
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