The citizen. (Frederick City, Md.) 1895-1923, 1899-07-21

nave Oeeu overcome OY feeding
The oil in the form of spray and
heating. 20 about 500 degrees
Fahrenheit. the current OF air in
which The oil !, burned. In a pa
per 70 the London Society of Arts.
ST. Marcus Samuel states that
tie c2,a-i6c pover Of The oil IN
der cT.'l-ar marine boilers has
been Shown = y almost -vo 10
one = compared with Eastern
erals. vhil- .. locomotives one
-91 Il OH has been found %
eeEa- -Fo and ga--Lzlt IONS u
co@L Tie oil 0+rr> further econ
ONE, II -aUdli- :. >ceving. ere
Il- eousuup-ic- = petroleum i'm
Russia a. t1e. alone las been
lo- less than 200. 000 tons per
allgM. II La, been used r1-lU.
slreli far uauy wears on vessels
navigating the Caspian Sea. and
e. a coz >idera r. extent Oh
steamers engage in the eastern
trade and in several OF the Euro.
praH ravies. aud great numbers
0f vessels are being fitted for il
use. The engineer roIe-ees a gen
.Eal adoption OF liquid fuel for
marine boilers.
The novel idea demonstrating
solutions by means of rentrifu-
gal apparatus has been tested by
Johnson Walter. a German chem
I,t. The smallest and lightest
particle Of any precipitate pres
.nt was quickly separated. but
the solution remained unchanged
even in its most rapidly rotated
part; and in gaseous mixtures.
too. there was no tendency for
the ,denser constituent to be
thrown outward.
British mariners see an impor-
taht collision preventing appara-
tus in the ingenious sound locator
of Mr.. James Anthony, Of New
castle. This has large circu-
sound collector, with
a resonator, from which the sound
is transmitted through a receiver
to the ear tubes. When the Oh.
orator has turned the collector
toward a whistle or fog signal,
the exact direction is shown on
dial.
India has immense coal depos.
its from which the output in 1896
was 3, 537, 800 tons. In the Ben
gal Districts alone, the Ranigury
and Baraker collieries are esti-
mated to contain $4,000, 600, 600,
900 tons; the Karampara collier.
les, $500, 600, 900 tons; the b.
karo collleries, !, 800, 600, 600 tons;
and the Djheria collieries, 49,,
900, coo tons.
The successful solution of vex.
ing and oft-tried problem is
claimed by NJ. Albert Henry in
his unsuitable and uncapsizable
boat. This has an inner hull,
which is much smaller than the
outer one, and the space between
is perfectly tight, forming an air
chamber, which is divided into
compartments by partitions. The
floor of the inner hull is above
the level of the water. In the
center is longitudinal opening
through both bulls to the water
forming a well in which is sus-
pended an adjustable center
board Of sheet iron heavily
weighted with lead. All water
entering the vessel escapes
through the opening In late
severe trials in France, a 80 foot
life boat on this model was tip.
ped about 90 degrees, when it
quickly righted itself; and even
when turned completely over with
much effort, it instantly resumed
its upright position, and emptied
itself i'll four seconds. 1t sank
completely when a tank of 1850
gallons Of water was suddenly
emptied into it, yet was quickly
on the surface again, with the
water flowing out of it.
Tin and lead may be alleged in
all proportions. An investiga
ton by Mr.. f. Sperry shows that
the alloy having the greatest ten.
sile strength sustains 9243 pounds
per square inch, and contains
S2.5 parts Of tin to 27.5 of lead;
while the strongest alloy under
compression requires a load OF
l1.395 pounds to shorten a piece
one inch long one tenth. and con
tains II per cent. of tin and 80 of
lead. The most ductile alloy
contains 40 per cent. of tin. For
ordinary use the best alloy con.
sists of equal weights of tin and
lead, and the alloys containing
from 10 to 30 per cent. of tin are
not homogeneous. The alloys
that pass through a plastic state