The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1889-07-27
SCIENCE AND INDUSTRY.

1t is supposed that the steam power
now utilized Is almost equivalent to
the hand labor Of the whole population
of the world.
Experiments in welding wire rope
by the electric process show that the
strength of the finished welding is
within eighteen per cent. of the normal
strength of the cable.
Aluminium for dental purposes is
said to be coming into favor. 1t is pro-
nounced better than rubber and less in
cost than gold. 1t is bright. strong,
odorless. and as healthy to the gums as
gold or platinum.
Recent experiments at the Ear
Hospital in London indicate that stam-
mering is not nervous defect only.
In operations for deafness in several
cases the patients were cured of STAN
mering also, and the result Is the
opinion that stammering comes from
some defect in the hearing.
M. Beauregard, an eminent Egypt
ologist, believes that Egypt ut the time
of the Pharaohs exhibited the mixed
implements with acquaintance with the
means of extracting copper and blend
ing it with other metals.
Why is negro's skull harder and
thicker than a white man's9 Herodo-
tus explained it by attributing it to the
early exposure of African children to
the heat of the sun; and Prof. Virchow,
after his trip up the Nile, sides with
the Greek historian.
satisfactory tests have been made
of the new liquid. pyrodene, which
renders wood, textile fabrics, and such
infammabe materials tireproof. The
liquid. which is an English invention, is
made of all colors, so as to be used as
a substitute for paint, and is claimed
TO render houses entirely tireproof.
Doors are now made of two thick
| paper boards nodded into panels and
glazed together with glue and potash
and put through q heavy rolling pro-
cess. Covered with waterproof coat
ing, they are hung like wooden doors,
and are both beautiful and serviceable.
Investigation has shown that terra
Gotta bricks and blocks best resist the
action of fire. Next to these as fire.
resisting materials come concretes.
For buildings intended to be fire
| proof, the best materials are iron work
encased in terra-cotta, with tile or
| brick work in roof and floor.
The arch9ologists of Norway have
pursued researches into the early pop
ulation of the country as far north as
| 10 degrees l5 minutes. The results
show Il large population in prehistoric
times, but one not given to agriculture.
No bronze objects are found, and the
conclusion is reached that the men of
the early iron age were the first to
affect them, those of the bronze age
never having reached the northern
parts.
An interesting fact is that one OF
the greatest problems now perpleXing
scientific men-the production of heat
less light-has been already solved by
nature. The light from luminous
beetle-sufficient for reading news
paper-is shown by the spectroscope to
be all of one kind, and just the kind
for seeing, while the thermopile finds
no evidence of heat. Yet in all our
artificial lights vast quantities of fue
are wasted for useless heat.
"A French chemist named Beaumet7
exhibited at recent meeting of the
Paris Academy of Medicine Il new
alimentary substance which he names
fromentine. 1t is obtained from wheat
by the aid of special millstones and is
really the embryo of the wheat reduced
to Hour. 1t contains three times more
nitrogenous substance than meat, and
IL large proportion of sugar 1t is
thought that it may advantageously
replace powdered meat as a concen'
trated food. 1t may be employed fol
making soups, and even for making
biscuits.