The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1888-06-28
SCIENCE AND INDUSTRY.

Extracting Oil from cedar bouShs
is new industry in Maine.
Steel. when hardened, decreases in
specific gravity, contracts in length and
increases in diameter.
Rosewood shingles are being inn
ported as anovelty for trimming sho Wy
cottages at seaside resorts.
A New York halter says that none
of the so-called Panama hats are made
at Panama. The best of them, he ex-
plains. comes from Guyaquil.
"A late refinement in dentistry is a
tiny electric lamp for lighting up the
cavities of teeth during the process Of
filling.
dealers in hard wood furnishings
say that sycamore wood is rapidly
coming into use. 1t works well,
makes an excellent finish. and is much
cheaper than birch. maple, or oak.
"A sugar refining company with
5000. 900 capital has been started to
use Henry Friends new method of re-
fining by electricity. The cost will be
about seventy-five cents ton.
"A recent English invention relates
to casting packing rings ready for use
without boring or turning. The rings
are cast in a chill mold around 4 me.
talic core.
The Introduction of American
watches into England has reduced the
number of gold cases marked ut the
London Assay Office from "a. S44 in 1876
to 20, 416 in 1886. and of silver case:.
from 119. .394 in 1876 to 95. 708 in 1886.
The mystery regarding the whites
II eggs after the ice-cream factories
have used up their yelks is explained
by statement that they are used to
make albumenized paper for photogra-
ply.
The question having arisen as to
why the fallen branches of trees. at
certain stages of decay. are more or
less colored through their tissues with
various shades of green. it is alleged
that chemical analysis shows the pres.
ence of iron as the base of the green
coloring matter
The smallest circular saw in use is
one used in Sitting gold pens. 1t is a
disc about the size of five-cent piece
and has the thickness of ordinary
paper. Its velocity tends to keep il
rigid enough for use; four hundred
revolutions minute is the ordinary
rate of these diminutive saws.
The latest idea in the direction o.
waterproof footwear is shoe made
with stout calfskin vamp, seamless
underlying which is a vamp OF thir
rubber, and between it and the lining
which is of stout canvas. The bottom
of the shoes has a rubber interlinina
between the outer and inner soles. ant
thus the shoe is about as near water
proof as leather shoe can be.
Barrels are now being made o
. hard and soft wood, each alternate
stave being of the soft variety ant
: slightly thicker than the hard WOO
stave. The edges of the slaves are cu
square, and, when placed together t
.. form the barrel, the outsides are even
' and there is V-shaped crack betweel
each stage from top to bottom. i
this arrangement the operation of driv
= ing the hoops forces the edges of tn
hard slaves into the soft ones until tn
cracks are closed, and the extra thick
-. ness of the latter causes its inner edge
~ to lap over those of the hard woo
> slaves. thus making the joint doubl
secure.
y - In some recent scientific exper
i ments on the effects of cold, two fros
IS were frozen solid in temperature {
u about 200 F.. and kept in that col
VI dition for half an hour. On thawin
- slowly they recovered perfectly. but
y was found that large periods OF exposu
- - invariably killed the animals. The e.
IL pertinent was tried of freezing herme
~ ically sealed meat, so as to kill
bacterial organisms. and thus render
n incapable of putrefying. 1t was foun
y however, that so low temperature
III 800 below zero would not destroy q
al vitality of micro-organisms. 1t W
G. thus made clear that the attempts
IS preserve meat for long time by
sh momentary freezing of it must
Z. abandoned.