Amador ledger., 1906-05-25

Height and Weight. -Whistling Drops.
Progress in Dynamos.- .-Keeking
the Auto Busy. Smell.
Telescope Eye.-Sugar for New
Uses. The Electric Safety Lamp
A New Gas-Lighter. p Portable Bal
loon Gas.
The rule was worked out by Paul
Broca that a grown mans weight
should correspond with the number
of centimeters in his stature. Test
ing this formula by data from 40. 563
soldiers accepted for the service, a
German Psychologist has shown that
it holds good for little men-those
ranging IN height from 154 to 159
centimeters, but that in men of the
average height of 174 centimeters Is
feet 91a inches) the body-weight is
under this standard, and that the
divergence increases with greater
height. Weight in the army is largely
Influenced by previous occupation.
Men coming from sedentary work
clerks, tailors, saddlers, etc., gain
rapidly, while over fed confectioners.
bakers, butchers, and brewers lose as
quickly.
The whistling tube of T. Terada, a
Japanese physicist. lis of glass with an
internal diameter of one fifth of an
inch and one end is drawn out to
capillary point, while the other is
connected to weighted air. bag.
When the nozzle is wet with water,
olive oil or other liquid and then
blown through, a musical note of
definite pitch is produced, varying
with the size of the nozzle and the
quantity and nature of the LIQUID.
The bubble of liquid opens, and the
note is due to the vibration of its
edges. With magnetic liquid, like
iron chloride, the neighborhood of
magnetic field raises or lowers the
pitch.
In two decades the capacity of cleo
trio generators has increased more
than hundredfold, while they pro-
duce power with four times the former
efficiency. The largest generator of
twenty years ago was the 100 kilowatt
dynamo, belted to 150 horse power
engine. but dynamos now being built
have a maximum capacity of 1900
kilowatts.
The motor car OF Paris firm Is
designed to light the country resi-
dence of its owner or do other work
in its hours of rest from travel. The
car is immovably braked on two fixed
rails placed in the auto-house, the
detachable crank provided is removed
from the two-cylinder gasoline motor,
universal joints the motor is connect
ed with the dynamo or other machine
to be driven. While this arrange
ment promises to be especially useful
for furnishing electric light away
from the usual power stations, it may
prove great convenience tor driving
pumps, wood saws, or other domestic
apparatus.
The strong sense of smell attributed
to the common snail has been found
by Prof. X. Yung, of Geneva, to be
distributed over the entire body not
covered by the she'll, the two pairs of
tentacIes, the lips and the edges of
the feet being particularly sensitive.
In the experiments made, a brush
dipped in various odorous substances
in turn was brought near the different
parts of the body, and responses were
noted at distances of one twenty-hfth
of an inch to several inches. Only in
exceptional cases was odor perceived
as much as Is or 20 inches away,
showing that smell cannot guide these
creatures to food far removed.
A popularity of the eyeball of the
mole is that it can be projected for
ward several times its own diameter
beyond the orbit and retracted in like
manner. DIR. Lindsay johnson notes
that this is necessary for vision, as
the animals dense fur so covers the
eye that the making of an opening is
the only way to see.
Inventive effort should be turned
into a new path by the $50, 200 prize
of French manufacturers for a new
application of sugar in the industries,
other than the food industry. The
award is to be made after the French
consumption of sugar is increased at
least 100, 900 tons year.
In his new safety incandescent cleo
trio lamp, DR.. D. Tomassi, of Paris,
has sought to minimize the Ilsk of
fire or explosion by the use of a
double globe, with provision for ex
tinguishing the light IN case either of
the glass coverings is broken. A
switch in the outer globe is arranged
to close the circuit, lighting the
lamp, when subjected to air pressure.
The lamp is lighted by forcing in air,
and if the outer globe is accidentally
broken the reduction in pressure will
cause the light to go out before the
inner globe is damaged. If the inner
globe breaks, the air in the outer
globe will be similarly reduced in