New-York tribune., 1873-03-01
INDUSTRIAL PROGRESS.

II is claimed that tin ore has been discoveries a'
Stendal, Pike County, Ind
Pittsburgh. Penn, receives annually about 9SOOO
tuns of iron from Missouri. costing ABOUT % ~"
tun.
Tho boot and shoe trade Of Elmra, N. T.. is grow
ing rapidly, the sales last year being IN excess Vi
S1000,000.
A hill has been introduced in the Pennsylvania
Legislature repeating all taxes upon the incomes UT
capital stock of manufacturing aSsoclatiohS'
Twenty-Five thousand dollars have been sub
scribed in Barbour County, Ga, for tho building Oh
q cotton factory, which wnl be begun iorIn"i'n'
There are. we read, vast beds of marble on the
Vermont shore of Lake Champlain, when ,yleld
stone of extraordinary hardness and of great beauty
The Sheffield Eng.) steel l-makers are still embar-
raised by high price OF tuel aha % mneT nIes firms viii
duced,which is very unlikely, inc smaner niin' III
be unable to transact business
The San Diego Call Foundery, the first estab-
lished there recently began work. The metihg ca,
pacity Of tue furnace Is 5000 POUNDS ana aLe lI5,
usad is Pennsylvania coal, costing there 80 gOidl
per tun.
In Prussia q Committee of the House OF Repre-
sentatives is considering the expediency OF VOtng
800 900 for the purpose of enabling the gover%Se %
To Obtain exclusive control of the railways Inc
Liberal party generally is disposed TO favor tue pro
ject.
Certain salts-such as tho alkaline nitrates OF
chlorates-are applied in England by Mr *. Elsdon
10 the conversion Of cast iron into wrought IRON OF
steel by causing them to act the upper surface OF
the molten pig iron, which Is piaceu III Poooi'"i
syphon-shaped converter.
In Great Britain an act of Parliament went INTO
effect at the beginning of this year which requires
every mine-Owner to make return OF tne alinMual M
produce of his mine Statistics OF DIlClsn nllIlnS
have hitherto been compiled from voluntary reports
obtained through the personal influence OF Mr. hoD
ert Hunt.
In England. Mr. w. Dingley has lately patented
the use of sulphate of soda IN the crude state Oh s
cake for the publication Of iron. small quantity
of the salt is thrown to the surface OF the molten
iron during the operation OF pgdding-a, dose OF OF
about IL ounces beng recommended LOr each neaV vi
or Al cwts. of metal.
The great strike in South Wales still continues.
Writing from there on the 18th ult. correspondent
says: 'The make of iron is almost thing OF the past
passed through tho Goat NIL on ol DI%rS, nISc;nS
rails in heap a crowd of women clamorIDg Tor coal,
and locomotive passing here and there, apparently
without any object"
Prof Chevreul the eminent French chemist, has
made series of experiments on the stability OF dyes
impaired to silks, damasks, aud fabrics used In
furnishing The blue colOrs, he finds, produced by
indigo are stabe PrusSian blue re5lsts moderately
he action of air and light but not of soap scarlet
and carmines produced by cOchneal and lacdye are
fast the most stable yellows on silk are produced
by weld.
DIR. G.. Robinson. British electrician has patented
a new method of saving timber. 1t consists in
applying platinum wire heated to redness orwhite-
ness by an electric current TO tho trees or woods
which are to be severed much in the same manner as
it has hitherto been employed on smaller scale In
surgery. BY fitting the wire with handles, so as TO
be able to guide it in any direction, the most intr-
cate fretwork can be cut.
1t is suggested in England that law shall be
passed requiring that strike including more than
800 men shall be regarded as legal unless the opn-
ion of the wOrSmen has been first expressed in its
favor by ballot and, Also that during the progress
of the strike minority of reasonable number, may
demand fresh ballot to decide whether tho strike
shall or shall not terminate This plan is proposed
to cOunteract the exercise of terrorism which 1t Is
said commonly causes and prolongs strikes.
Some improvements in the separation of silver and
gold from lead have been announced by Messrs.
Risway and Pauyille of Paris The argeDtlferous
or aurIferous lead is treated with magnesium or
aluminium either alone allOyed with zinc, and the
rich scum thus obtained is amalgamated with mer-
curry The inventors state that they able to re-
generate the metals which have been used in the
process of extraction and thus have greatly reduced
the expense of separating the precious metals from
the lead.
NJ. Marion Of Paris has devised a rather simple
method of Photographic printing. 1t conslsts IN
impregnating paper with ferro-prussiate which rem
ders 1t sensitive to light. The drawing which is
made on tracing paper is laid upon the sensitive
paper as a negative and exposed to light, after which
The sensitive paper il washed in water The copy is
then found to be produced it iii white line on a
blue ground. which may be changed to black. the
drawing still remaining white by using tannln
solution.