The St. Mary banner. (Franklin, Parish of St. Mary, La.) 1889-1931, 1902-03-01

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Mica is now being mined in consider
able quantities in North Carolina ana
marketed in competition with the in
ported article There are number or
active mines in the State, most OF
them, however, being worked ON
small scale. 4 new outlet for the scrap
produced in mining is being sought III
the development OF a new boiler-tuDe
covering. Electric machinery con-
tinues to create the chief demand for
mica, beth foreign and native.
At recent meeting of the Academy
of Sciences, Paris, an account was
given of the researches carried Oh in
ancient Egypt on the mumitied fishes
by NM. Lortet and HugouneHg. A
chemical analysis Of the mummiticd
specimens of LatoS nilOticus showed.
that the ash consisted largely OF com
mon salt and silicates. The fish are
IL wonderful state Of preservation
and appear to have been enclosed in
mixture of clay and sand impregnated
with Il large proportion OF alkaline
salts, especially sodium chloride.
II. Ebert has been experimenting for
some time trying to count the number
Of ions in air during different atmos-
pheric conditions. lie employs an as
pirator in which air is drawn between
the armatures Of a charged cylindrical
condenser, tie potential being such
that the ions are driven to the sides
within the time taken by any portion
Of the air stream to pass through the
condenser. The results Of his expert
Eents show that the number of ions
is very much larger in sunny weather
than in air filed with moisture or
dust. The number is small in any
case.
The development OF new colonies de-
Ponds largely upon soft wood for teie
graph and railroad lines, mine timber
ing, buildings and other purposes.
Hard wood is too difficult to work.
while in tropical climates the soft
wood is quickly destroyed by ferments.
worms, insects and other agencies, and
VI. Louis Balmes suggests that an I'M
portant part of the future equipment
fer settling hot countries viii be a
portable apparatus for rendering wood
antiseptic. Woods treated with creo-
sote or sulphate OF copper have proven
very durable for railway sleepers. Sew
eral antiseptic processes are now
known, and it is known to be possible,
whether economical or not, to inject
the protective substance TITO every
part Of the wood.
A new plan for securing pure ice,
without resorting to the use OF arti
fetal methods has been devised by a
Milwaukee ice company, and will be
tried on large scale this winter. This
plan is to pump water from Lake Mich
igan into a pond made especially for
The purpose on the lake shore, and har-
vest the ice there after it has formed.
The company has bought q farm of
40 acres on the lake shore three miles
south of Port Washington. The bluff
there IS ITO feet high, and On top OF
this a pond of fifteen acres in extent
has been built. AS there is no sewage
system at Port Washington, the water
OF the lake at that point should be en-
ttrely free from contamination and
should give as nearly pure Ice as can
be had by this means.
In many parts CT Philadelphia, par
ttcularly in the exposed single and twin
houses Of West Philadelphia and the
suburbs, double sashes are employed
to keep out the cold. A Swiss scientist
has just completed an elaborate series
Of experiments to determine the rela-
tive less OF heat through glazed ard
double glazed windows, which should
be of interest to many householders.
He finds that there is a decided adj
vantage in the double sashes. the loss
OF heat being halyed by their use. 1t
was further found that the distance
between the glass pGnes is all impor-
tant factor, a separation OF, roughly
speaking, three to five inches, being
the most efficient. AS was to have
been expected current Of air directed
against the outside pane increased the
rate OF loss, as did also the wetting
Of the panes.