New-York tribune., 1873-07-26
INDUSTRI1L PROGhESS.

Man ganoso is spoken Of as substitute for nickel,
the high and increasing plco oil the latter metal
making its use extensive.
monster diamond has been received from the
Con. ri Good Hone. weighing 2Ss. carltS. This is
fLd LARGEST diamond South Africa has furnished. and
when cut it is estimated IL VIII be half As large
again as the Koh-i-noor.
A valuable deposit Of coal and shale has been
fonnd nj a depth of 50 yards on the property OF the
Duke OF Sutherland in Bora, SutherlandshiIe. THIS
deposit has been found at point 80 miles away
from any previously known coal-hcld.
The AVERAGE number Of passengers conveyed on
the Metropolitan District Railway OF London la
100000 a month. The time allowed for stopmge at
each station has been reduced from one minute 70
some seconds, IN order 10 erect saving oil seven
minutes on the entire journey.
The traffic on The railroad between Vera Cruz and
the CITY OF Mexico, since ITS opening last December
is considered highly satisfactory by the English
companv which built and owns that line The
amount Of rolling stock being insufficient tour loco
motives. 50 covered wagons, ana hlt tmId-clas5
carriages were purchased IN the United States
The falling off in the export of iron from Great
Britain TO the United States is conceded IN England
and is ONLY questioned in this country. The Welsh
correspondent Of Tile London Engineer, however,
IL Is now tacuy acknowledeed that our iron trade
with America has sensiny slackened for though Dow
thther, the aggregate sent VIII not compare with the
past.
The Birmingham correspondence Of the same
paper confirms the tenor OF the above III these
words: ,.,,,.
II has transpired that il is impossible 10 do business
with continental Europe or with America at anYthlug
like our prices finished iron. IL IS within our InOw
edge that German merchants who have bought bars at
2 $50 GOLD and plates 4l4 go gJld ton decline
10 have them shipped at tnOse ngures, which are
too nigh for competition with native products. In one
case q German merchant, on being tOld that the iron
must be sent from the works, replied tDat II might be
sold by auction i'm TINS country, and he would bear the
loss
An English technical periodical points ont an
easy wav OF testing whether water Is good and ht
for general use. ID says:
Good water should be FREQ from color, unpleasant
odor aud taste and should quickly afford l1her with
small portion Of soap. If half pint Of the water be
hottie few grains OF the best white lumt sugar added,
and the bottle freely exposed TO the daylight III the
window OF warm room, the liquid shOiJd not become
tIrld even after CX pos for week or ten days
inc water becomes turbid 1t Is open tC the grave sus
uiciOn Of sewage cOntaminatlOn put ~ icmui clea'
n s almost certainly safe We owe 10 ielsc tls SIN
pie valuable but hitherto strangely neglected, test
Tin has been met with heretofore iii Australia, but
the recent discoveries indicate far richer deposits
than any before known there. The district where
the metal il found is along the valley or the
MacIntyre River, on the high plateau OF the
Australian Alps. The ore Occnrs. as usual III
granite, and so disseminated as to form KIND OF
BtOck-wOTk. Tie everything surface deposits contain
large quantities OF oxide OF tin, and 1t Is probaDle
that very large amount of ore Will be obtained
from the diggngs washlngs. In serles OF tIlais
recently made, 20 pounds of deritus were found 10
tin-bearing belt is known TO extend more than $50
miles IN length, so that these new mines may III
time become quite as productive as those OF Banca
or Cornwall,