Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1890-06-13
SCIENCE Ano l.lousIRY.

a civil engineer in Ger1naav mug
study and practice nine years nnder gov
eminent supervision before be can make
independent engagements.
"A vegetable flannel Il made IN Ger
many Of fine leaves which are wovef
into undergarments and clothing 8
various kinds. One great advantage i
no yermin will lodge in clothes m:.ds
from the material
The art Of making red glass 70
church windows, as practiced in this
twelfth and thirteenth centurles, wa
lost for long time and was only re
covered In 1926. The modern product /,
still inferior 10 the ancient
The mollusks that bore into the In
sulation of submarine cables are pro
nounccd to be species of teredo. The
embryo is said TO penetrate between the
iron wires Of the sheathing and Turk in
the jute until strong enough to cut
through the gutta-percha-
Manufacturing statistics show that
the State OF New York leads in the
production Of underwear. while Penn.
sylvania is far ahead in the making Of
stockings. Seamless stockings are made
everywhere, but in the Western States
especially; in tho latter are also made
wooden gloves and mittens in vast
quantities. particularly the filled nit
tens, now so important in the trade.
Experiments have demonstrated
that the relation between the velocity
of projeetile and the resistance offered
by the air to its motion differs ma
terially from Newton's theory that the
resistance is proportional to the square
of the velocity. For velocities which
are nearly equal to that Of sound in tbs
air ne proportionate increase of tbs
resistance is much greater than that o.
the velocity.
"A firm at Bolivar, n. Y, is engages
in manufacturing gas from crude oil
1t is claimed it beats old nature. Undel
the new device the gas can be sent Il
any reasonable distance required This
owners claim they can show more fire
for heating purposes than any other ga.
plant in the world and at lower cos
than any ON record, or. in fact. as cheaI
as natural gas. For q portable gas
work for hotels at watering places il j:
said 1t can not be beaten.
Flexible metallic tubing is nov
made in Belgium, and is said to bt
meeting with considerable favor as q
rival Of rubber hose. It is formed bE
wrapping strips of brass or other meta
spirally around a mandre1 the strips
being bent over at both sides and thin
narrow rubber band inserted to prevent
leakage The tubes bend readily in anJ
direction and are perfectly tight, very
strong. and easily handled and repaired
The substitution OF steam for com
pressed air in gun intended to throw
shells containing dynamite or other high
4 explosives. is proposed in France, the ad
vantares claimed being the furnishing
Of power direct from the boiler withou
the use of air-compressing machinery
The pressures usually carried in steam
boilers would not be sufficient for thi
purpose, but boilers ara promised of
special type which will supply steam a
pressure at from six hundred to eigh
hundred pounds, and which will at tn
same time be safe and easily handled
"A factory at Cronly, a village nea
Wilmington, \. c., is making baggini
for cotton made from pine needles.
is believed that this new material 70
bagging viii not only break up the jut
trust, but become source Of grea
wealth 70 the South. Dry pine needles
or straw" as they are termed serve .
we'll as green ones, but on account Of tn
difficulty Of obtaining them in suf
ciently clean state the practice is {
take the leaves fresh from the tree:
selecting the lower and older ones an
leaving the younger for the support {
the tree.