The Olneyville times. (Olneyville [Providence, R.I.]) 1887-1917, 1889-08-09
SCIENCE AND INDUSTRY.

1t Is supposed that the steam power
now utilized is almost equivalent 10
the hand labor Of the whole population
OF the world
Experiments In welding wire rope
by the electric process show that ths
strength Of the finished welding Is
within eighteen per cent. Of the normal
strength Of the cable.
Aluminium for dental purposes is
said 20 be coming iG favor. II Is pro-
nounced better than rubber and less In
cost than gold. II is bright. strong,
odorl"ss, and as healthy 20 the gums a.
gold or platinum.
--Rcccnt experiments at the Ear
Hospital in London indicate that sam
mering Is not nervous defect only.
In operations for deafness In several
cases the patients wore cured Of stam-
mering also, ana the result Is the
opinion that stammering comes from
some defect in the hearing.
M. Beaurcyard, an eminent Egypt
o!ogist, believes that Egypt at the time
Of the PharaOhs exhibited the mixed
condition Of combining the use Of Hint
implements with acquaintance with the
means Of extracting copper and blend
ing II with other metals.
Why is ncgro's skull harder and
thicker than IA white mans? Hcro1o-
tus explained it by attributing it TO the
early exposure Of African children 10
the heat Of the sun; aud Prof. NirchOw,
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
inllammable materials tireproof. The
liquid, which is an English invention, is
made OF all colOrs, so as 20 be used as
n substitute for paint, and is claimed
to render houses entirely hreproof.
Doors are now made OF two thick
paper boards nodded into panels and
glazed together with glue and potash,
and put through 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 como concretes.
For buildings intended to be fire
proof, the best materials are iron work
cncascd In terra-cOtta, with tile or
brick work in roof and floor.
The archnoogists of Norway have
pursued researches into the early pop
ulation Of the country as far north as
20 degrees ID minutes. The results
show large population in prehistoric
times, but one not given 20 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 tho northern
parts.
An interesting fact is that one Of
the greatest problems now perplexing
scientific mcn-thc production OF heat
less light-has been already solved by
nature. The light from n luminous
beetles sufficient for reading n news
paper-is shown by the spcctroscope TO
be all OF one kind, and just the kind
for seeing, while the thcrmopile finds
no evidence Of heat. Yet in all our
artificial lights vast quantities Of fuel
are wasted for useless heat.
A French chemist named Bcaumetz
exhibited at recent meeting OF the
Paris Academy of Medicine n new
alimcntary substance which he names
fromcntinc. II is Ot tanned from wheat
10y the aid OF special millstoncs and is
really the embryo OF the wheat reduced
to flour. 1t contains three times more
nitrogenous substance than meat, and
II large proportion OF sugar. 1t is
thought that it may advantageously
replace powdered meat rs n conccn-
tratcd food. II may be employed for
making soups, and even for making
biscuits.