Great Falls daily tribune., 1919-12-15
SCIENTIFIC FACTS
In Tabloid Form for Busy Readers of Daily Press

A process for extracting nitrogen from
the atmosphere in commercial quantities
without using electricity has been in
vented by japanese chemist.
An Indiana farmer has invented a har
vesting machine for clover seed that
picks oply the ripe heads, leaving the
green ones to be gathered when ripe.
Two automatic telephone exchanges
with q capacity of 10000 subscribers
that will be erected at Copenhagen will
use American equipment throughout.
A revolving lawn sprinkler has been
equipped with a screen by an inventor
so that it will spray only n semi circle,
leaving a walk or adjoining lawn dry.
Norways waterfalls, it has been es-
timated by government commission,
contain from 100000 to 10000 horse
power that can be profitably utilized.
In a recently invented device to enable
golfers to practice hangs a strip of pa
per that serves as target and is
punctured by an accurately driven ball.
After 13 years Of consideration work
soon will begin on an enormous hydro
electric plant that will utilize the power
of the Victoria Falls in South Africa.
Coin in the slot soda water machines
that Texan has patented first release
glass, then flavoring syrup and lastly
the correct amount of iced carbonated
water.
To increase the speed Of quick lunch
restaurants an inventor has patened a
system for serving rows of tables by
carriers suspended from overhead tracks
by trolleys.
Railroad builders in South Africa have
enabled work to be done at night by
equipping freight car with an electric
plant and mounting searchlights on pro-
jecting arms.
The original home and laboratory of
Joseph Priestly, who discovered oxygen
in 17T4, will be erected on the campus
of Pennsylvania state college as a me-
mortal to him.
Gasoline cars on an Australian railway
have wedge shaped ends, it having been
found that the air resistance to the old
type cars caused the use of 40 per cent
more fuel.
In new machine for removing water
from floors that have been scrubbed or
mopped a pump is mounted at the ankle
Of two rubber blades that draw the
water together.
Designed for garages is new fire pail
made to contain two chemicals in sepa
rate compartments which. thrown to-
gether on an oil fire. unite and form n
flame smothering them.
The rear end of an automobile locker
of English invention is made of ground
glass, on which a cars number can be
painted and illuminated at night by
lamp inside the locker.
Mounted on wheeled frame running
on rails. trench digging machine in
vented in New Jersey can be used to fill
trenches as repidly as they are dug, elm
mating sheet piling.
The new government of Finland is
planning to make Lake Ladoga, which
has an era Of 1000 square miles, ac
cessible TO sea going vessels by cutting a
canal to the Gulf of Finland.
A dam Of plant ropes that float has
been invented by Californian to retard
the movement Of water in irrigation
bitches without being as Objectionable
as a permanent structure.
it has been estimated that 5o.120
pairs of old shoes are needed for every
mile Of road composition made Of Stag.
rock. asphalt, and scrapt leather that
has been patened in Great Britain.
A Pennsylvania water company has
prevented the condensation of moisture
on the outside Of its pipes by coating
them with ground cork applied after
they have been coated with cement
paint.
Since the last census Of Manila was
taken. four years ago. the American
population has decreased more than A.
per cent and the Spanish more than 80
per cent
A plant of which Brazilian state
produces 100000 tons a year has been
found to yield cellulose suitable for the
manufacture of linen paper and fibres
from which imitation cotton can be made
A new cabinet for monographs and
records is mounted on two legs and two
wheels so that it can be moved easily
To give sheet lead rigidity nd
strength a process has been invented for |
it with iron or steel gauze. |
Having only about three horses to
each 100 residents, Switzerlands equine
population is the smallest of any nation |
Silk worms hatched from an ounce Of |
Eggs will eat a ton of mulberry leaves
md produce from $50 to 200 pounds
IF silk.
Using secret process Of his inven-
ion, French scientist converts flowers,
ruits and even animal tissues into
METAL.
A metal basket which can be folded
ompactly en6ufhGto be carried in
pocket when empty has been invented