The Middleburgh post. [volume] (Middleburgh, Snyder Co., Pa.) 1883-1916, 1889-08-01
POPULAR SCIENCE.

successful in Chicago that the plant Is to
be largely increased.
Power obtained from q fall Of water o
mile distant is to be used for lighting the
tower Of Segorbe, in Spain.
The maximum intensity of the light
from the Eiffel tower is 500, 900 carcels,
giving range of 127 miles.
1t has recently been proposed to use an
alloy of zinc and phosphorus in boilers to
prevent incrustation and pitting.
Naturalsts and others are becoming
considerably alarmed over the prospect
Of the early determination Of the kanga
roo.
Experiments made on the dog and
rabbit show generally that the quality OF
water is less in the venous than in the
arterial blood.
NJ. Chsuvin concludes that Iceland spai
possesses magnetic rotary power not only
In the direction of Its axis, but also In
the neighboring direction.
After more than twenty seven years the
pearl oyster has produced pearls of tn,
Madras COST in sufficient quantities to b,
worth the expense Of fishing.
Gurjun oil produced from fir tire,
that grows In the Andurdme Island /.
said to be sure cure for leprosy. Il ID
used by Injunction and taken internally,
Carpenters and other tool users whs
keep up with the times now use a mixtur,
Of glycerine instead of oil for sharpening
their edge tools. Oil, as it is well known
thickens and smears the stone.
The invention Of "fog machine" by
which water is thrown in spray as fine al
vapor, makes it possible to spin the finest
cotton thread in mills established in the
hottest, dryest parts of the South.
The Insect House of the geological So
ciety of London is said TO be the onl,
place where an attempt is made TO at.
! tract public attention To the various and
wonderful groups of the insect family.
The increase in the amount Of tonnag,
passing through the Suez Canal is claimed
to be due in great measure to the light.
ing Of the canal by electricity, admit
ting of its use by night as well rs by day.
Abroad conductors are being laid
underground and insulated 10y placing the
bare wires in glass tubes, which are pro
tected by layers of cement, outside OF
which is an iron pipe. This method il
cheap, gives high degree of insulation,
and water cannot penetrate.
Both the French and German Govern
ments have provided facilities for the ex
animation and certification of electrical
instruments, and it is now found that ap
paratus bearing the official indorsemen
brings a better price in Contincnta
markets than non -attested instruments.
A steam carriage in which coke is use(
as fuel has lately appeared in France
The driving is effected by two hinc
wheels, and the speed attained is abou
fifteen miles per hour, twenty-eight an'
three quarter gallons of water being suf
ticient for a run of twenty-five miles.
In an improved method of wire-mak
ing, the wire is drawn cold over succes
sive pairs of rolls, each pair having
greater speed than the pair preceding II
with an intervening friction clutch t
graduate the speed of the rolls to tn
speed of the wire in process of rolling.
From the general appearance of til
vegetation, together with a discussion c
the origin and relations of the florist,
is concluded by eminent bo,anists thc
Greenland is not European provinc
from the point of view Of botanical &c
ography, but has nearer relations
America.
A century ago only 300 species {
orchids were known, and those very in
perfectly. Now the latest authority give
the extreme number of knows species {
10000. This may be an excessive est
mate, but shows the immense advance
which have been made in our knowledc
of these interesting plants, for whic
5 collectors now ransack the most remoI
G quarters of the globe.