Shenandoah herald. [volume] (Woodstock, Va.) 1865-1974, 1891-11-06
POPULAR SCIENCE.

hASNNhA
Electric soldering irops are extensively
used in canning establishments.
Cases of tuberculosis are a common
result of occupying the room Of con-
sumptiye.
At Toxic, Japan, concern employs
an electric motor instead of steam for
operating planning and drilling machines.
A new mode of furnishing power to
motor engines by mixing steam with hot
gases is creatinga great deal Of interest
in English circles.
An arc lamp of about 1000 candle
power will, when placed about thirty
five feet above the earth. light up in an
area of 400 feet radius.
India ink is made from fine ampblack
compacted and cetnented with glue.
The finest black is derived from pork
fat. The glue is made from buffalo
hide.
The European demand for American
made carts and light vehicles has greatly
increased. 1t has also been found
cheaper to send them across without
painting, leaving that to be done
abroad.
Investigations carefully made iu the
PENNSYLVANIA University Yeterinar y
School tend strongly to establish the
fact that the milk and flesh Of tubercu-
lous cattle are almost the sole cause Of
consumption.
Professor Carcot, the eminent lecturer
on nervous diseases iu Paris, has sue
ceeded in obtaining enlarged photo
graphs of the brain under variou, con
ditions Of the disease, result Of greSS
scientific value.
The danger Of conveying infection by
lancet or needle having been pointed
out, a French surgeon proposes vaccinat-
ing with ordinary steel pens, specially
pointed. Being inexpensive, Il fresh pen
can be used for each operation.
4 patent has recently been taken ont
for the manufacture Of good sub5ti-
tute for ivory. The ingredients usei
are mostly those of which natural ivory
is composed, and the addition of differ
cnt coloring matters enables objects OF
any desirable shade to be produced.
The aquatic plant, the bladderwOrt,
feeds on animal life. The tiny bladder5
attached to the leaves and leaf stalks are
each furnished with door, the whole
acting OH the cel.trap principle. Any
small water creature that ventures to peep
in Is seized in the clutches Of the murder.
Gus plant and is at once swallowed and
assimilated.
The phenomenon Of the green ray,
or flash of green light seen when the
suns upper limb rises from or sinks be-
hind the sea horizon, has been lately OBJ
served by Mr.. c. SIostyn in the Southern
Ocean. He says it is best at sunrise,
because the eye is not fatigued with
watching the glowing disk Of the SUM-
it is likely to BE- at sunset.
An ingenious application of electricity
for ventilation has been brought olt IN
France. An electric fan FURNISHES the
current of air, which can be cooled by
means of ice or other cooling agent. II
hot air is required, electricity is sent
through a series of meshes Of wire whose
bigh resistance causes it to become hot,
and the air passing through these is given
the heat required.
A novel cure for nervous diseases Is
being practiced in Wori'ho!en, Bavaria.
The treatment is the outcome Of the
study of an old priest, and consists
chiefly in spraying water over the body
in various places, dressing at once with
out drying, and brisk walking imnet'-
ately afterward. The diet is carefully
attended to, and thousands have bsel
cured of nervous troubles which had
defed all previous physicians.