New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1873-03-22
INDUSTRIAL PROGRESS.

The British Government publishes weekly state
ments of the public revenue and expenditure
In England the income tax of (id.l eight cents per
pound sterling (S5l, yields S3j,0O1,OOO per annum.
The French insurance companies did well last year;
the proportion of damages did not exceed 40 per cent
of the premiums received.
The coal trade of London which has about 100000
people. is controlled by about - men, by whom it is
felt prices have been unduly enhanced.
Tho manufacture of 7-pOunder bronze guns, for
mountain and boat service has been discontinued
in England. and steel 7pOunders are to replace them
The gold coinage of the German Empire had at
tanned. the lst 'ilt., the large sum OF SlHS30'5.
This increase Is duo to the gold received IN payment
OF the French indemnity.
The Disadvantages of China il indicated Strkngly
by the simple fact that, although her coal fields
cover 10000 square miles, she mines 40 coal, and
although Sh0 has an neXhaustible supply OF iron
ore. she smeits very httle.
The City of Richmond one of the largest YES
sells hitherto built on the Clyde was recently
launched She is intended for the Transatlantic
trade and has gross tonnage of 400, with engines
of 1000 horsepower nominal.
France imports annually 100000 tons of coal, re-
Ceiying about 4.OOODDO from Belgium 100000 from
England. and l.000.ODO from Germany and elsewhere.
This dependence foreign sources for fuel is prov
ing unfavOrable to French industry.
The shells for the S5-ton guns on board the British
iron-clad Devastation are feet in length IL inches
in diameter and weigh 700 pounds. They con
structed upon tho Palliser principle OF cOnical
shape the points being hardened by chilling.
"'rhe iron trade OF Wales British paper says,
sis destined to some startling changes Furnaces for
the use of Spanish projected on the East Moor
Cardiff DOwlais aud Ebbw Vale have ii in con-
temptation to erect furnaces in Spain, but it is
uncertain yet what course will be taken
The Council of the British Society of Arts have
resolved to offer the gold medal of the Society to the
manufactures who shall produce and send to the
London International Exhibition of 1913 the best
collection of specimens of steel suitable for general
auy NH
include complete illustration OF the applications OF
the varieties OF steel submitted
cement of great adhesive quality particularly
servceable in attaching the brass mountings on glass
lamps ~ it is unaffected by petroleum. may be
pared by boiling parts of rosin with part of caustc
soda, and parts of water. thus making KIND OF
soap which is mixed with One-halt its weight of
plaster of Paris. Zinc white. white lead or precipi-
lated chalk may be used instead of the plaster, but
when they used the cement will be longer in
hardening
The well known explosive material, "nitro-gly-
ceriDe7 is made by mixing nitric acid with twice its
weight of sulphuric acid, and when the mixture is
cool ~ parts of gycerne 10 $50 OF the acid added
very carefully and stirred when 10 parts of water
are added to this, nitrO-glycerne is deposited. Ii
needs to be washed with bicarbOnate of soda to re-
move all traces of acid. This process is simple but
only experienced chemists should attempt to manu-
facture this highly explosive article.
The French Government imposes stamp duty of
one franc 80 cents per 1000 francs on the nominal
value of all foreign loans circulating In France and
to facilitate the collection OF TINS TAX mas established
for 1873 the following table Of the value in French
money of foreign coins: Austria : tiOriD, Of. PIC.
exterior debt payable in pounds sterling, psf SOC
Spain interior, the pastre Of 1Oc exterior ST. 40c.
Italy lire g2c. United States dollar, 81. 16c. IGl-
land form, IF. 10c Portugal: pound sterling psf.
SOC: Russia: exterior pound sterling, 2of zoe. IN
terror, 25f soc. Turkey: pound sterllng, 2Jf. This
table forms the latest correct basis for calculating
the value of foreign coins.
The use of bronze for field artillery, which had
been rointrOduced Ill Prussia in 1862 has again been
Pnf ata Iha HalI
gun Will differ in several respects from the old one.
In the first place. the caliber will be propOrtiOnably
less that is 70 say fne gun Will % % tnS length
CALDER of tho light one. The proJecte weighs about
15l pounds is longer than the old one, and Is pro-
PEELED by charge of onequarter of its weight. The
greatest change consists in substituting three pro-
ecting copper rims TO take the grooves in place of the
lead sheathIng. new shrapnel, with an improved
time-fuse has also been introduced since 1911
The "long strike" still continues in South Wales
Four thousand of the workmen employed by Messrs.
BrOgden of the Lynn Works have, however, re-
turned to work, that firm having seeded from the
IrOnmasters Union by accepting the following con-
ditions proposed by the men on strike !. That the
return to work upon reduction Of five per cent
instead of ten per cent AS proposed by the masters.
9. That this continue for two weeks less two DAYS.
3. That for one month afterward the old rate of
wages be paid. 4. And that from the end of March
until July the old rate of wages be paid. Another
notable incident Of the strike an interview re-
Gently between Mr. Crawshay and his workmen. He
proposed that the workmen accept the reduction of
ten per cent, promising that III SIX weeks the ar
rangement would be revised. The men Indignantly
rejected the offer, and decided not to confer with
Mr.. Crawshay again unless he writes in his own hand
requesting them TO do 10.
Pennsylvania coal miners will be interested to
learn that new safety lamp was recently patented
in England. The inventor has modified the old
lamp in the following way: He has removed the
wire gauze from that part of it which surrounds the
fame and replaced it by strong lens or bulls-eye
glass side and silver reflector on the other.
The result of this il that his lamp gives
cheerful light estimated at 20 times that of the
old Davy, and sufficient for all necessary purpOsesp
by this the temptation to expose the flame for
more light il removed. He further provides com
pete check against the possibility Of heating the lamp
by of the flame. for is placed low that il
cannot be made to approach the gauze either by the
breath OF by fitting tue apparatus. He has remeded
a third defect The lower portion of the apparatus
containing the oil reservoir and the wick, which il
screwed TO the part which consists of the gauze
flannel the buls-eye, and the reflector has "a spring
bolt attached to il, which catches each time the
screw is turned, and finally locks together the two
parts Of the lamp. The bolt is easily removed by
another screw. but this cannot be done without at
the same time Withdrawing tho wick and extnguish-
ing the fame aud IL thus becomes impossible To oh
tain light by opening the lamp. The new inVen-
ton thus remedies the chief defects of the old lamp
and those 10 which tho accidents still occurring In
miae3 Aye cAieng attributed.