New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1855-07-28
ce BY BE- p BlaneLsrd Of Pars the f0lOwing sceOunt


of tbs process:
eve fumsh from comp4ndious memorandum of VI.
Ssin.e Clam Devile what we have been sbletO gather
from lecture hastily delivered at the Ac .demy lately
by NJ. Dumas, on the beautiful specimens Of A'rm-
obtained by the young chemist Of the Upper r.
mel School, at the msnufsc'ory OF chemical produc-
tiors belonging TO the General COmp,ny Of Jave
with the aid Of funds furnished by the Emperor at the
recommendation Of the Academy.
The thorough working OF aluminium by means OF
the chlOrice Of this metal and sodium, 49, by general
admission, a great acquisition 10 science. The author
procured chloride Of aluminium by causing the ca orne
TO react on mixture Of aumina and cOal-iar' Previ
ously caclued. The operation was effected IN -
rciOrt with extraordinary facility and perfection. The
result Of NJ Deves observations Is that the action OF
the chlorine is procured upon layer of one, OF at
most two decmeers OF the mixture, 30 that the aD-
sorpton Of the Gas Is always complete.
"the condensation Of chloride ofaluminum i effected
in q chamber Of masonry ine with tiles. This chloride
IL compact that II can be seen on the table, Of CON
siderable density and composed Of ye low crystals
Very slightly ferrugD0us, il i purified completely
dung the process OF extracting the ALUMINIUM III
which lie vspor passes over iron filings heated 10 fOO
degrees or thereabOut. The -esqui-chofide OF ron
volatile as the chloride Of aluminium, Is cnangel Oy
contact with the iron and becomes comparatively very
fixed. The vapor Of the chloride OF aluminium ns'ng
from the apparatus forms colorless and very ranps-
rent crystals.
"Sodium is being prepared the meanwhile in large
and email vessels with remarkable facility. Having
studied with particular the influence OF temper
allure on the surfaces exposed to heat aud ne acviV
Of the vepor Of sodium i escapes IRON the appara
tus NJ. Deyille il convinced tlat by properly regu-
latiug lie relation between the heated surfaces anu
the section of tubes from which the SODIUM issue.,
one could procure this metal at moderately hlsh
temperature, about that perhaps OF the msllng polnt
of silver. Already even the cylinders are much less
leated than are The vessels used in the ma-uianre OF
zinc Tie author is employed in producing
sOdium III continuous apparatus.
Z" As 10 the reaction OF the chloride OF nlum.num
upon the sodium that is done in metallic tubes, the
fom and msnse emen OF which are not yet sufficiently
scientific. II The particular there Is YET some'hih9
deficient; buAthe 'kllful chemist hss aeaay decided
upon plan OF experiment suitable to obvlate these
oifculties ard We do not doubt, after the complete
successes 80 rapidly tained III his laboratory that he
will soOn entirely overcome them.
d" IL will be remarked undoubtedly, that IN the de-
tails above faithfully rendered from the account OF NJ
Devile there is mention Of the very reduced prce
which Messrs. Dumas and Ballard have promised. II
appears that for the present az least this pr &c l. SIM
vtry high and very far from being what would be con-
slider the net cost stated by cOnditionay Ofthe
agents necessary TO extract the aluminium. Moreover
NJ. Dumas has not explained himself formally con-
corning the price even of the metal aud he has
Anticipated too much in this respect. Now If sodium
which cost lately 900 francs kiogramme, should me
thirty francs more It requires three times the guam
tity Of that TO extract proportion of aluminium, It
will be perceived that this later article would not be
40 accessible rs they wonld have it seem, not 10
ton Other particulars which increase the expense
"Sl there is reason to believe that factory OF alum
established at Marcel turning To account the
chlorine of Muratic Acid, which is produced in super
abundance and the aumina of certain deposits in the
vicinity could offer this precious metal at price sufh
cently low to place It shortly among the more com
mon ones
Scarcely has aluminium been ranked among met
ais before independently of the unexpected service
will render such TO the arts ana Sciences 1t begins
10 figure as an electro chemical agent IN "a less re-
markable manner. The skful director OF the gall
vano-plastic department of the Mint, NJ. Huot, sub
mitied TO the Academy through NJ. Dumas some as
saws in which this metal was substituted for patina az
an electromagnetic element IN the piles TO single
M Uulot has succeeded, not without great diff
entity in rolling perfectly and without loss, an ingoi OF
aluminium of thirty and some gremme-, procured from
o. of the first mtDgs OF tins metal obtained Dy W.
Kousse au-less BIKE than at first enl containing races
of iron and silicium. connection of aluminium and
zinc Smalc amaied for long time, charged with water
acidulaed with q twentieth Of suphuric acd at 90
degrees dsengaged during the first hours considerable
hydrogen aud produced current equal not SUI
rerior 10 that Of connection Of plana and zinc ex-
cited TO the same degree The author asseis mat the
Iext day the electrom0iye force OF TIE PIE was re-
duceG ueGrty OneQuaTtcr; but he remarks that II SUI
foes 10 INN erge the aluminium in nitric acid, or still
better ar appeBrs, in muratc acid-as i l. expe-
diet to effect onee-to give 10 the circle is nrst
force. ,,.. 49,,
presents also a surface nike times moe extended than
The latter metal i'm equal hickness, It's substitution
for pGiina should be productive OF real advantages
above all LOW mat IL lrlct his DecOmc WY
BILE The aluminium here spoken of Ia very difficult to
force In order TO roll II, II has been found necessary
to anneal il at each pas. by deposng copper eecrO-
Chemically on u plate OF aluminium they have sue
ceeded bv the aid of rollers in reducing to very thin
plates Hard aluminium acquires by anneallng an in-
hexibiy which would mike it of great use IN the sus-
pei sion of all kinds of scalts for assays or Analyses
This metal is 20 light that; the weights OF the system
being the same the Of the beam can be elongated
great deal, and long blades can be placed even on
the extreme points of suspension as on the center oil
oscillation The author does not doubt that in weigh
ing 20 erammes, TIE sen-iblity of the balance would
not rse a heli-miEOnth.